They added a streamlined "Modern" control mode alongside their original "Classic" mode with motion inputs. This was an effort to make the game more accessible to newcomers to the genre, people who were intimidated by fighting games, and people who for various reasons can't do the motion inputs necessary for special moves.

The Modern control scheme balances this ease of use by somewhat restricting the available special moves - you can do specials with one button and have access to the basic tools, but the real complex combo stuff you can only do on Classic.

It was generally a good compromise, as it was mostly the die hard crowd who were going to get into deep mechanics stuff anyway, and if someone who can't do motion inputs wants to get far with Modern they can still do so by learning good fundamentals (which like 90% of Gamers refuse to do) alongside the simple controls

This of course made a lot of gamers very angery, including like one or two people here. "It's woke for allowing casuals and disabled people to play in the same sandbox as me and cheat not only the game but themselves". It's the same argument as dark souls when you boil it down

simplified controls to "help" new players, because street fighter is designed for arcade stick and imperfectly translates to 4-button pads.

i'm skeptical of these things as noob traps versus making better tutorials and figuring out how to teach button mashers to actually play neutral, but i do find it extremely funny that the broken exploit people were (understandably) worried about actually showed up on the regular controls, not the new ones.