I'm going to take a wild guess and say you own a Bosch powered EMTB, and are looking to convince yourself you made the right decision. And you spend your time reading and participating in threads that help you reaffirm your EMTB choice.
So let's make this clear. I owned a 2025 Merida E160 with the new race firmware from Shimano, and at the same time I owned the new Amflow with the M1.
When I went to a Bike Park with a Shuttle Service and spent the day running Downhill Trails. As you say. There was little difference between the bikes. The Amflow a little more poppy. The Merida more stable.
But on trail rides with climbing, it was night and day difference. The climbing ability of the Avinox System is unparalleled. You can just get over bigger and more technical obstacles, with the extra power and traction.
Now lots of EMTB manufacturers have great EMTBs with great Geometry's, Kinematics and Suspension. But put an Avinox Motor system on one of these bikes, and you don't just get a great downhill bike. You get one that is so much fun uphill as well.
Anecdotally I'll provide one example. My mate also has a 2024 Merida E160 on my recommendation. When I got the Amflow, he rode my Amflow up a technical section, he had never been able to clear, and giggled the entire way up. He just loved that he now had this additional skill.
If you don't find having this extra climbing ability fun and rewarding. Then I agree. Everything you are saying is true and you will never notice any difference riding an Avinox powered EMTB. But for me. It has completely changed where I want to ride. I no longer just look for the best downhill runs. I now look for the trails with the best mix of both. And I almost never use shuttle services anymore. Why would I waste an uphill run, when it's so much fun on my EMTB.
Yes I have a Bosch
No, I don't need to plate Bosch gold, to fool myself.
What I can tell, and this is a very different prespective than yours is this:
1) I don't shuttle with an ebike. Doesn't make sense, when you have capable bikes for that.
Even if you take the battery off, ebikes are heavy for what they offer (travel and geo).
2) I don't need more power on the climbs, because with Bosch Motor, my limitations are:
a) Slip (tires breaking grip)
b) going lose and not able to maitain the line
It's Technical Climbs (basically DH trails), and the best upgrade wasn't POWER, but DETESCTRITION, allowing to speedup on some areas, and carrying that momentum - for this, I belive more power would definitely help, but in reality, would I wish for that? No...
For riders that use fireroads or even roads, I understand the Power being helpful, if you have the ebike derestricted.
I personally take these type of climbs easy, and use them to connect something or cut short the ride. Also find this really boring...
In resume:
Ebikes are less fun than BIKES on any DH trail, and IF I had chairlifts, probably wouldn't look at ebikes.
Ebikes are so fun at techy uphills, and doing different rides from the usual Bike Rides, and are the reason I have mine.
Difficult and technical climbs, require a good connection between rider and motor, and Avinox M1, is not one of those motors, but I'll give a try on the new or an old and fiddle with all the settings.
My next ebike, won't be an Avinox type.
SL are too low in power, so I'm just waiting for more poke on motors like TQ HPR60, like 80...90Nm (it's "only" 20 to 30Nm more).
A Trek Slash, with an updated motor as above, would make a delicious ebike.
Hope Shimano heads this way, and not the MO'POWA way.
And btw... when I look at Avinox bikes, what really poke into the eye is:
Price
Geometry & Geometry adjustability
Fast charging 12A
Power... it could have ½, and I nothing would change on my side.
PS: I'm not against MO'POWA. I'm all on favor for that matter, but doesn't mean, it will suit me or I like it.
BMW sells GS1200/1250/1300 with much less poke than 1290/1390 or Multistradas, and you don't see GS owners complaining about power or not buying because of less power.