I don't say this to be rude, I've been paying for Evernote since at least 2012 so clearly I really liked the product and will miss it, but this request has been open since 2014, a lot of people have commented on it in support, and during that time Evernote has been losing a lot of paying users as well as market share, to the point that it was just recently acquired by a company it once would have been bigger than just on its own. Yes some of the features it's been building recently require some on-server processing and that's one of the reasons Evernote has resisted this request, but clearly that strategy isn't working out so well financially. Many of those features are ones I never had a use for and so am willing to do without, and am instead now paying money my notetaking app subscription money to Standard Notes and Notesnook.
Again, I don't say this just to speak ill of Evernote, I'm really going to miss it, it's been very useful to me the last ten years. But the privacy concerns that motivate me and others here to look for an encrypted solution for storing our personal information definitely profoundly outweigh the convenience of the kind of features you mentioned above; and some of those can indeed also be implemented client-side, yes that requires writing new code, but ultimately, Evernote's ceding this privacy-focused market share to other companies currently, so that's a calculus they'll have to weigh under their new ownership.
Sources: https://www.crunchbase.com/organization/evernote/company_financials https://www.crunchbase.com/organization/bending-spoons/company_financials https://www.engadget.com/evernote-bending-spoons-acquisition-201505825.html?guccounter=1