Allowed to include facebook, twitter, instagram etc. icons in font?

From a legal point of view, would it be allowed to include some icons of corporate logos in the PUA section of a typeface, e.g. facebook, twitter, instagram etc.?

I guess it is OK. Double check on their brand guidelines, e.g. this is the one of IG https://en.facebookbrand.com/instagram/assets/instagram

thank you!