So the elephant seems to be - It would be helpful to the many "legacy customer" if Evernote management provided a final "operational date" where "Legacy" will no longer function properly for syncing etc. My gut says, eventually, maybe without sufficient warning (unclear), the legacy infrastructure will just stop working one day b/c it will be shutdown as a cost-saving measure.
As two long time paying customers, we've tried moving to 10.x at least 2-4x over the few years and each time, it was a "controlled disaster" which we had to roll-back from. Consider too that just updating from legacy to 10.x is NOT a simple task. For instance, we have older Scansnap scanners which have worked reliably for years which will have to be replaced b/c they are unsupported supported in 10.x That's more incurred capital costs.
My general plan is to upgrade to a Windows 11 laptop sometime before EOY 2023. That's when I was going to try the current Evernote client again while I kept my existing "legacy" setup installed on the older setup as a fail-safe. I've followed many of the discussions and we've done our own searching for replacements as well.
I liked the idea floated earlier that maybe "paying clients" could stay on "legacy" but without the business case details, it would be tough to say whether even that is viable.
Cheers!