This idea has been discussed on the forum in some threads before and generally rejected by staff. You can see some of these here (but I think there are more):
https://forum.inaturalist.org/t/labels-for-poisonous-toxic-on-inat/7258
https://forum.inaturalist.org/t/create-a-foragable-or-edible-plants-search-option/6089
Also, FYI, you can respond to multiple people/put multiple quotes in one post by highlighting and selecting “quote”. This helps keeps thread cleaner/easier to read than making a string of posts from one person.