And just look at the state of this thread. Anyone would think this wasn't about helping women at all (this is supposedly a feminism/women's rights forum) and people here are just out to inconvenience anyone who doesn't share gender critical views (including women) then celebrate if anything bad happens to those who aren't gender critical as a result. This place isn't women looking out for women. It's people with gender critical views looking out for people with gender critical views.
There are plenty of people on this thread expressing concern for anyone losing their job.
Plenty have questioned whether Waterstone's response is reasonable and proportionate (whilst acknowledging that we have no idea what this individual's contractual terms were, we don't know whether they had already had warnings, we don't know how Waterstone's would describe what happened etc).
People have also, rightly, said that a bookseller admitting to ripping up trans books should also face disciplinary action. (I am not aware of any examples of this happening though.)
No one is celebrating this person losing their job. No one. There is, however, a degree of hubris here. Many women have lost their jobs for saying sex exists, including in the publishing industry... (See for example recent X posts by the woman who published Kathleen Stock's book Material Girls.)