Hi there, Peter1x9. Welcome. Since you posted this in the "Suggestions" board, I assume you just forgot to add the suggestion you intended to post on how to circumvent this issue yet keep all the players who do like those maps happy?
My opinion is that most maps, in one way or another, are time trials. If you don't play and finish, the creeper will swamp you. Once the map has been played by, oh say, 60 or 600 people, one can be pretty sure that there is a solution and that it's merely an application of one's mind to find a solution. I remember seeing here (often) how time-critical maps are subverted by more asture players finding some of those different strategies you allude to.
If you Google "Gump" on YouTube, you will see that there are several videos showing alternate strategies on how to beat this map - from the rather straightforward fight-for-every-inch approaches, to the more innovative "fly Odin City over a small area for a long time" approach.
Perhaps in the fullness of time you might come to appreciate those maps and not consider them as difficult or frustrating. After all, there are a whole bunch more that are *much* worse. May I suggest you attempt the CW1 map - Perfect Round? Once you have tried and beaten it, let me know which of the at least 3 strategies for that one worked for you.
Or you may want to move on to these maps by Berman Post and UpperKEES
There are others, but we'll leave it there for now.