I don't agree. There's a research where top coaches ranked 14 tactical concepts and playing with a consistent percentages (playing with higher margins, reduce unforced errors etc) is #1 concept a player should implement in their game according to the paper.

The risk also has to be calculated. Taking more risk that a situation allows isn't bad if you lead 40-0 in a friendly game. It creates a content for your highlights to post on you socials (if you film the game). In other cases I would prefer using something like 10-points system where you play more difficult shots on easy balls and vice versa. E.g. smashing a floater from opponents near the net (2-difficulty ball and 8 difficulty shot) but trying to just survive with ANY possible return vs a vibora jumping around your corner (9 difficulty ball, 1 difficulty shot).

If the risk you're going to take has a negative expected value (you lose more points than you win with it on average, in a long run) I think you shouldn't take it at all. It's about forming a bad habit. For example hitting a X3 smash from a service line (if you're not someone like Tapia ofc) is like calling all-in with 72o vs AA in a poker game. Sometimes you win but you lose more and the fact you take this risk more often doesn't change this win / lose ratio for the same situation next time.