

They addressed it in the comments on the article - basically they are worried about being sued by Meta if they make copies of the post. Walled gardens are like that so I can see why they are cautious - however I’d prefer they at least included a separate link so you could KNOW it was linking out to Instagram.
I’ve been considering donating for a while (I already donate to my instance) so I’ve set that up now. ~$5 a month isn’t much but I hope it a few more people it too it will start to add up.