In my observations, the LAST cleaner is a very powerful & effective solvent that won’t hurt stylus glue bonds, and evaporates very quickly (no goop). I’ve never had any reservations over the years of applying it to my most expensive cartridges - including Koetsu Blue Lace Diamond and Coralstone. I also have Stylast, but never really bother using it.
Much like the warnings some assert against Magic Eraser (also perfectly safe with PROPER use), I just think to myself "haha OK, I’d love to see a playback video of what abuse ACTUALLY occurred to cause the claimed damage / goop".
But if you’re skittish or don’t have a steady hand (always use your free hand to steady/brace the working one), then absolutely choose an easier method with more margin for error.

