Y’all have Brexit to thank for that. All my clients relocated any technical work they had in the UK to Poland or the baltics.
As counter anecdata, I am in the Netherlands and I am (now, as much as before) receiving calls for job opportunities from UK based recruiters. They are for the majority concentrated around London, Oxbridge, Bristol, Manchester. Depending on where GP is based in the UK, the landscape and opportunities can be quite different.
Irrespective of the politics and bitter emotions, London's VC funding scene is arguably the closest we have in Europe to SV/Seattle/NY and it will continue to play a role in making the UK relevant in the tech scene.
Of course, one could criticize generalizing based on that one data point, but that's a different thing altogether.
How you can deny that is politics and bitter emotions is literally beyond me.
But let's for the sake of it accept that "it's your own fault" is what was meant by it anyway. That still doesn't imply bitterness.
If parents explains to their child not to run with scissors because they might hurt themselves, the child does so anyway and ends up hurting themselves, and one of the parents says in-between consoling their child "but do you see how you only have yourself to blame for it, if you decided to do this anyway after we warned you this would happen?", then that might not be the most considerate timing for sharing a harsh truth, but there's nothing bitter about the statement.
Why remove large groups of skilled engineers in your businesses domain and have to retrain again, because of a political change. I can understand a company with a manufacturing base doing this (due to import / export regulations changing), but this makes no sense in software.