I can confirm this. My employer brought in several teams from Accenture to push through some new tech initiatives, and every one of them is basically a dumpster fire. I was doing code reviews for one of the teams, and nearly every commit would be sent back with multiple findings. Some of these commits were literally minor UI updates that someone with a few hours of Udemy HTML/CSS training could do without issues.
Yep. The executives at my employer realized the consultants were "underperforming" and cut their contracts, but this just left the in-house teams stuck with fixing or rewriting the Accenture code, piled on top of their current project work.
There's a whole industry here in America that re-shores programming contracts. They know they can't underbid Indian/foreign body shops so they just wait a few months and call back the companies who went with cheaper programmers. If the company is still around it's generally a complete re-write.