Water ingress is what you’re dealing with. Egress would refer to water coming out of the battery compartment. (Sorry, I was bored and wanted to show off my stunning intelligence)
Yep, it’s not a cheap pastime, but then what technology based recreation is?
You live in Wellington which has a few reasonable surf breaks - I can attest to the much more affordable nature of that sport, esp if you have an EV or hybrid
Possibly. Applied inside the downtube won’t ‘mask’ a crack, but might help prevent it.
Are the majority just dumping their bikes when warranty expires?
Has anyone thought about putting a layer of reinforced epoxy over the joint to maybe prevent movement or is everyone just waiting for the crack and using warranty?