It looks very plausible that stretching before you exercise doesn’t do much for you. Multiple older surveys suggested this.
Annoyingly, the studies linked in the previous paragraph are 2 decades old, and somehow I can’t find a large, well controlled, trial.
We have 5 review studies. The material to review is mid, but all find essentially no benefit from stretching.
I hedge in the title, because I’d love someone to pull up with a controlled modern trial. Alas, no such luck.