Float or non-float is an issue usually decided by ergonomics. Any good pedal cleat system should not be hard to get in and out of. Float or no changes the required motion a little, but that is quickly learned.
Many (most?) cyclists find fewer injuries and chronic issues using pedals with float but not all. My knees do far better with no-float and cleats where I can crank in toe-in beyond what my feet do naturally. So two of my three pedal/cleat systems are no-float and the third is SPD simply because that make such good cleat/shoe combo for gravel riding. To keep my knees happy, I have a lot of toe-in cranked in and the release set at close to max (and they are my hardest pedals to get in and out of by a lot. Skill isn't required but a lot of force is.)
Now clipless pedals need to be maintained. For most, an occasional oiling goes a long ways. Also cleats wear and need to be replaced.