Reading the article and it's predecessor it seems they are mainly doing it on cheap contracts in the UK??
Which would not be in the EU.
I'm not sure if it's even legal to do so in the EU, tbh. it might be against the net neutrality rules in the EU (though they have loop holes, so not sure).
In the article:
"Now, in addition to some carriers in Europe, it appears that T-Mobile/Sprint in the United States is also blocking iCloud Private Relay access when connected to cellular data."
Though as far as I understood the European carriers voiced complains but did not act, thought UK carriers did (which isn't EU anymore).
Tbh. the article is just not very well written, I also first thought the article implied that T-Mobile US is an EU carrier operating in the US (it isn't, it's an US carrier owned to around 43% by an EU carrier, with which it shares a bunch of thinks, like trademarks).
