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.
I’m pretty sure I heard that stretching was a lesser but still beneficial alternative to exercise but that’s been in my brain for a long time and I’m not able at this moment to track down a source of this claim.
I mean… it is exercise. You are moving your body. I think that counts.