Don’t give up on language learning in general; it’s a fantastic skill for personal growth, learning about new cultures, traveling, job opportunity, etc. etc. etc. If you must, just learn a standalone desktop program, like Anki or similar, such that no one can force updates on you as is the case with web-based apps.
That said, the great part about Memrise vs. other such programs is its low level of skill required to get started, yet incredible level of customization. That, and the community interaction involved with community courses, leaderboards, (edit because I forgot the obvious: MEMS), etc. Additionally, Memrise has a minimalist interface which manages to look sleek and simplistic and mature, yet simultaneously aesthetically pleasing to look at and friendly in atmosphere. Memrise (as a website and app, perhaps not as a company) generally treats its users as if they are intelligent adults but while still having the ability to draw in children that likewise have an interest in learning languages, etc. Other apps (Duolingo, etc) sometime seem to lean too much into being inviting to children, which can potentially alienate their older users in the process.
Anki has the customization but also a huge learning curve (or at least it seems that way to me), little community interaction outside of downloading user-made decks, and (to me, at least) a very boring interface. This update throws all of that customization out the window and makes it so Memrise isn’t much better than Duolingo (which has community interaction but low customizability and a generally somewhat childish interface. That said, I use Duolingo sometimes), or even Quizlet or another static flashcard-app.
I’ve been on the fence about buying a yearly membership for a while now, but have yet to do so, because it seems as though large aspects of the site can be changed at a moment’s notice and I might not get my money’s worth. This isn’t even the first bad decision (Anyone remember Ziggy or Decks…? …With the former giving Memrise far too much of the childish feeling I mentioned earlier and the latter decreasing community interaction as also mentioned earlier). However, those were ultimately reversed and I’m confident this can be tweaked back to a level the community is generally comfortable with… if the site management cares to do so. If it’s fixed by the end of the year (when the changes are supposed to become permanent), maybe I’ll buy a yearly membership. If not, I’ll likely move on to another site, after nearly a decade of use of Memrise.