As a counterpoint, I use conversations literally every day, and cannot recall the last time it crashed. My partner and kids have used it for at least the last 7 or 8 years to communicate with me and each other. I don't claim there are no issues, but "crashes often" isn't something I would expect to hear about it.

I don't find the UX to be clunky either, but I acknowledge that could just be my familiarity with the program, so I would leave that for others to dispute.