alt Hacker News> So the size of it just grows and grows and grows until it's using all the space on your phone. Not a good fit for non-technical types.
To be fair I've met plenty of non-techie types whose phones were "full" of stuff from WhatsApp or photos that had already been backed up, because the idea they could clear their local storage would never cross their minds. I've seen people buy new phones instead of clearing their cache.
Yes it's also a problem there but WhatsApp gives you the tools to fix the problem in minutes if not seconds, or ask your tech literate relative or friend to help and it only takes them the couple of minutes to clear it and maybe show you how. With Signal it can take hours of work so what happens is the non-techy person understands "oh this app filled my phone up I shouldn't use it".