I don't think so. Mac sales have only grown and the whole "you need a Mac for creative work" hasn't been a thing since the 00's.
I think this is more about having the team put advanced photo editing features into the native Photos app, and possibly contributing to AI image processing.
There are lots of amateur photographers out there that use Apple hardware yet so far Apple only monetizes storage. I wouldn't be surprised to see a subscription offering that includes pro tier features for Photos.app good enough to replace Lightroom for enthusiasts but not for actual professionals.
99% chance it will not stay alive for more than 1-2 years. Shazam is the only Apple acquisition I know of that still exists independently, and that's only because it promotes Apple Music on Android.
Most likely will be integrated into Photos or possibly even a new advanced photo editing app for macOS/iOS only.
Since they were already Apple hardware only apps, there is a good chance not much will change about it (at least in the near term) and they will just use it as a tool to increase the desirability of their hardware, just like they do for their iWork suite.
I don't think it bodes well for the long term though, because Apple tend to not care much about stuff that don't make them a ton of money.
It will probably become like their office apps, being updated at a glacial pace, used primarily as a marketing tool but never really reaching a level that would truly make them a worthwhile competitor.
I think this is more about having the team put advanced photo editing features into the native Photos app, and possibly contributing to AI image processing.