Template bloat, terrible compile errors, terrible debug build performance, 1 second of extra compile time per cpp file when you include ranges, and you can't step through it in a debugger.
None of these complaints detract from this being a terse, readable, and available using the standard library, which is what the question was about...
I will agree that std::ranges is quite a jumble of templates, and has a compilation time penalty. Perhaps the use of modules will help with that somewhat.