Starting to use Mac ~3 years ago, I often encountered giant blocks of text in right-click menus and while pleasing aesthetically, those were a chore to actually parse. For someone who daily drives macOS for, I assume, multiple years more than me, it probably comes down to memorisation, and how it looks becomes more important (with Tahoe breaking habits), but I find the inconsistencies and icons something that actually helps me find my ground.
Granted, the execution leaves a lot to be improved, I won't argue against it. Tahoe in some places feels downright amateurish. Despite that, I'll still take what Tahoe added over no icons at all... I feel like color icons + using them more sparingly would certainly be better though.
I guess a justification for Tahoe icons on my end is - those help me navigate the UI despite all their shortcomings (and ugliness they bring in many places).