No, it doesn’t mean that at all. It’s differences can range from types of munitions to avionics. The fact you said a multirole fighter is more limited shows you really don’t know the differences. A multirole is actually more capable. A multirole like F-35 can do air superiority but it won’t outperform an aircraft designed specifically for air superiority like the F-22. The F-22 does not do air-to-ground strikes. The F-35 can.

The multirole fighter is not a new concept.

The F-22 has done air-to-ground strikes, its problem is just being too expensive.

Being capable of doesn't make it the primary role. Yes the F-22 can drop a few bombs... but that's the problem.. a few. It doesn't have the load capabilities or external pylons (without compromising it's stealth entirely) to carry significant munitions or preferred role-specific munitions to be really effective in CAS or ground attack. Nor is it's cannon a comparable replacement for the GAU-8.