Can't wait for the left to do this kind of stuff. If you publically say something about Pride month, into the enemies list you go.

I am probably already on a few of their lists, and I think we Conservatives are behind that curve (The left already has them).
I donate to veterans groups, former member of the NRA, have posted my concise opinions on numerous forums about trans nonsense, extensively posted about topics from (Anthropogenic) Global Warming/Climate Change, signed the "Oregon Petition with over 34,000 other scientists opposing the Kyoto Accords, wrote quite a bit about COVID (in defiance of the narrative), etc. etc. etc.
But consider that anyone rooting for the death of any but the most heinous criminals convicted through Due Process is demonstrating a lack of empathy, in this case for his wife and kids, and a lack of conscience about publicly executing anyone they think they have a reason to disagree with (even though a lot of that is based on lies), really isn't the sort of person I'd want helping someone in a medical or teaching position, for starters. I would not want employees who can't hang onto their emotions and dogma enough to not cost me half the business that might walk in the door by not filling orders (like for posters for a vigil).
As for the owners of the various businesses that are firing people over this, they have the control of their business, they have the right to employ or not employ anyone they find to be exhibiting poor judgement, just as much as the nasty people who are celebrating the death of someone who would have treated them far better have a 'right' to post what they want in public forums, and suffer whatever consequences that come of that.