The biggest reason why forums like this and these pick up scam artists have following is because of men chasing women that aren't really interested. You and every other man would be better off completely moving on from these women instead of wasting your time with this ****.
If I did what you said I would statistically leave too much "maybe" ***** on the table and reduce my chances of ****ing Stacies.
I already had experience like this, met a girl from cold approach, 8/10 and young, Stacy type. We messaged a bit and she was non-responsive. I took a break and instead of deleting her number, reengaged her and got her on a date, then ****ed her on second date and then she started becoming clingy and I ****ed things up.
If I had just "deleted her number", I would have never had the opportunity to create a LTR with a Stacy. I was persistant and over time she started messaging me more often.
This was the "game" element. Girls mood change like weather. One day she is pissed off and doesn't want to talk with anyone and another day she is eating your dik. We can't be too uptight and butthurt when they don't respond.
Another one I had deleted number and then she reenganged and we had a LTR, because she splitup with her ex and I was backup plan.
If she keeps rejecting your advances over and over or explictly says you not to contact her, then yeah, don't waste time, but there is a lot of wiggle room actually and people who are dogmatic absolutists and claim "game doesn't exist!" just conveniently ignore this.
Game can be as tiny a nuance as calling her in the evenings and organizing dates at 8pm instead of lunch. One increases odds of a lay better than other. Game is about finding most optimal approach.
And this is the simple truth and answer to all of this lol. What the f do you guys having going on in your lives where you'd invest time and energy into women that really aren't interested.
Because practice shows that there is a percentage of cases where you can get a girl who was cold for a while later.
If game doesn't exist, why does this forum even exist lol