"Much" is not all as far as what trails you were on, plus the situations you refer to mandatory use may perhaps be a bit steep for horses. Of course we could discuss poles but you're just deflecting. If either of those two are "bad" in your viewpoint, it doesn't make your practice ok. If you just didn't give it much thought, whatever, no harm no foul, just save them for winter use.
These microspikes are "Twelve 3/8 in. hardened stainless-steel spikes per foot dig into icy terrain" with "Stainless-steel flex chains help prevent snowballing". On a full plant of the foot, that would be 12 incisions plus any number of chain rings digging in, with the chains being flexible and more likely to grab a little circular bit of soil. (Pound a chain into the soil halfway and then move it back and forth horizontally.) The forward 8 spikes are in ring configuration as well, there are only four in the back, but all the incisions would be close on the ground. As far as a trekking pole point, mine have been a small flat or concave up hollow tip (many manufacturers though so different options may exist). That's one sorta point to 12 spikes plus chains. Plus poles aren't driven into the ground on purpose and the weight distribution is likely less on average as poles are used for balance. Honestly I don't see nearly the same impact at all, I had already considered the differences before I posted. You are using both anyway.