Did you catch the part where A/I Collective is operated by foreign parties outside the US?
If you believe in civil liberties as rights and ideals, your belief shouldn't stop at borders.
So free speech absolutists don't care about free speech, just free speech for americans on american soil? Not very absolutist then...
The US free speech advocates had plenty to day about Julian Assange, an Australian stuck in the Ecuadorean embassy all the way across the Atlantic.
Funny, the same US "free speech absolutists" get upset about "censorship" outside the US (mostly in EU countries) all the time, so it would be completely on point.