Ahh, you mean the console? For the most part, it can still be accessed, but they have you enable it via configuration file these days, sometimes enabling a developer mode.
The most obnoxious game I've had to deal with to enable it was with Divinity 2, a quite hellishly difficult game. The regular game never had a developer mode, but the remastered version aka the Developer's Cut added a development mode as a separate executable. Problem being that the save files weren't completely backwards compatible with the base game and using certain codes could corrupt the save files. Yeah, imagine losing hours of progress due to randomly using a code. There were certain codes that were certain to do things though, so at least you knew to avoid them. Also, the dev mode didn't use full acceleration like the base game and was extremely slow.