That's where the "if you do it correctly" comes in.
Unfortunately for beginners to TCC there is no TCC Police force that regulates who is teaching correctly or not.
I would say, from personal experience, that 95% of the people who are teaching "Tai Chi" in the United States have no idea what Tai Chi Chuan actually is.
I doubt that it is any different anyplace else in the world so that's no dig at the U.S.ofA.
Unfortunately there is a huge divide in between "Tai Chi"and Tai Chi Chuan.
The difference is in the "chuan".
While there is a lot of "Tai Chi" in the world, there is very little Tai Chi Chuan.
I don't know if that's good or bad, it just is.
And it makes a lot of "teacher" a lot of money.
Let's face it, you can't make a living out of teaching Tai Chi Chuan, but you can do fairly well teaching "Tai Chi".
I teach classes for health that do not touch very much on the chuan. I have to or I could not sustain classes at all.
Thos who want the chuan make themselves known and then I can teach them. Those who do not don't even realize the difference.