In some modern tetris programs like Cultris still there is no 'hold'/store piece.
In this case it will be much harder to build the T-Spin setups ;p
Besides in those tetris games usually there is no score bonus for T-Spins etc. so you'd rather build up a tetris or a chain combo.
In classic tetris games, the T-Spin triple is not possible. It is only possible in the new SRS (i forgot what the first S stands for. RS stands for rotation system)
T-Spin double and T-Spin single are still performable though.
In Tetris DS/Tetris Friends/Tetris Party T Spins get a big bonus score ^^ . In tetrisfriends 1x T Spin Triple worth the same as B2B Tetris (1600 score/6 lines sent) and B2B T-Spin Triple worth 1.5 times (2400 score/9 lines sent)
In tetrisfriends only T-Spins get bonus score, but the other spins can still save your life in the game ;p .
Btw I'm not pro, I'm just a bit higher than average (I'm rank 11 out of 20 in tetrisfriends)
. Perhaps I can reach higher rank after decreasing DAS and modifying other options but it costs 5000 tokens each o_o I have only 1000 and each time i play in tetris arena (1-3 minutes) i only get 5 tokens.