No they didn’t, that claim is ridiculously easy to debunk but it has been going around because it fits the narrative.

It'd be nicer if you wouldn't presume to know the reasons people might believe erroneous information.

In this case, the reason for the misinformation is do to the lack of communication from the DOGE entity regarding their actions. Mr. Musk wrote via Tweet that he had "deleted" the digital services agency "18F" that develops the IRS Free File program and also deleted their X account.

https://apnews.com/article/irs-direct-file-musk-18f-6a4dc35a...

If indeed he did cut the agency, it remains to be see how long the application will be operational.