bot question: identify as mobile device vs. normal browser?!?

Hello forum ,

maybe you could help me with a general question. I noticed that among (instagram) bots

1. some identify themselves as a mobile device (instadub e.g. I think?),
2. others identify themselves as normal webbrowser (FollowingLike e.g. I think).

(As far as I understand it, some functions can only be used when identified as mobile device.)

BUT: For the other (most important) functions (like/follow/unfollow):
Isn't it much saver, when a bot identifies itself as a normal webbrowser?
I mean then the problem of "faking a phone" is not relevant?

Or is there an error in my thinking? Thanks for any help or information!