Different condition

All things being equal, anyone should be physically capable of performing any tai chi movement from any style of tai chi.
In reality, things are not equal, and a twenty year old person with a supple body can usually manage postures that a fifty year old could not.
It is important to train tai chi relative to your own individual level of condition.

More or less anyone could learn
tai chi for health & fitness, whereas tai chi as a martial art is another matter entirely.