Yes - more Mobile apps is never a problem - if each app finds a niche or a way of onboarding then we can grow as a whole. The magic of the blockchain is that we can have 1000s of apps and still be in the same 'sphere', it all comes back to the block explorer in the end :D
APPICS had a different vision which I understood from their point of view as well. They're not doing so bad, their Telegram groups has way more followers than Steem ever had for example, but Dapplr might be smart by giving us a 'taste' of an app that 'can do it all'. Nothing holds them back from creating 'spin off' apps afterwards. We're still too small for niche apps, maybe, although one niche app could also be THE breakthrough of any project if done right.