A job is not just robotically following a script. If your actions have negative impact on the goals of your job and you do it anyway, you are bad at your job.

I didn’t make any claim about people being good at their jobs. But I’m not sure why you think that this will have a negative impact on OFCOM’s goals. Imposing the fine is probably just a formal preliminary to having UK ISPs block 4chan.

In this case, Ofcom's stated goal (which I admit may be different than their actual goal) is to get overseas companies to comply with their rules.

I think you may be giving them too much credit. You're essentially saying that their real goal is to get an ISP block and everything they are doing now is performative to get to that real, unstated goal.

On the other hand I may be underestimating them as, to me, they just seem like power-tripping troglodytes.

I don't think the fine is performative. It's just the first sanction that gets applied. I don't understand why you think that's incompatible with Ofcom's stated goal.