If you mean the redirect, then yes. That's been in place since search.cpan.org was shuttered back in 2018.

If you mean the javascript, then perhaps. MetaCPAN put the fastly anti-LLM-bot-challenge in front of their content a few months back. It's mostly a minor annoyance until you want to do something like this. Almost all of the automated accesses to MetaCPAN now is supposed to happen via their API instead. However, I'm inclined to think that RSS/RDF endpoints on the main site should be excluded from the bot protection because after all we expect bots to hit them, don't we?

Update: There's also MetaCPAN::Client. MetaCPAN::Client->recent returns more detail than might be necessary but at least makes that available without the need for a JS-enabled, bot-detector-defeating browser in the meantime.