Probably, if lemmy become searchable in generic search engine. The one thing that made reddit great is searching a keyword + reddit, and most likely you'll find others who haved reviewed, discussed, fix, experience, what i'm searching before. So far can't do it with lemmy.
I feel like I'll only use reddit if I have specific questions for my more technical hobbies(ham radio, astrophotography, lockpicking, etc) I'll ask over in the larger community subreddit there. Otherwise, for my daily browsing and time killing, I'm here.
the issue with that seems to be all of the separate instances not being indexed and backlinked enough on google. so eventually you'll have to tell google <question> + lemmy + domain, and that's not even taking into account lemmy instances that aren't even called lemmy.
Worth noting this will naturally evolve as the userbase increases. Google will index wherever the most content is to be found. If that's here, then more resources will go into crawling over here.