I think both are pretty low key for the time being so I would guess “no”.
Plus, when you are a multi-billion dollar company, you don’t “contact”, you sue and win. If there were contacted, they would’ve been shut down already.
That’s a good one. If it was the accessibility they don’t like I’m sure IG can just cut off their API access and call it a day.
I would think none of the above.
Spam comments and f/u is something IG can / is working on / doesn’t care about on a global basis. I would imagine it is pretty ineffective to go after the tools, instead of try to eradicate the strategy as a whole.