I have seen this trick before it is a great tool for pushing tower especially near the end but there are a few problem with this ability
First, It requires coordination the players need stealth jump w/ quick respawn or (superjump) to take full advantage of it, and honestly this isn't going to happen in solo- queue unless they have also heard or used this trick themselves
Second, You will be one player down for the duration making it a 3 v 4, and the surprise won't last for long, and if the player falls or is splatted while hiding on the wall it kinda mitigates the usefulness
If you do plan on doing this do it either with a good squad or in solo queue to get those last few feet to win (though again it not always guaranteed to work)
Yeah, this is a niche strategy at best, it would probably work well if you pushed to a certain point and tried to defend it from there. But still, the surprise doesn't last too long, and if you keep stealth jump chaining, the opponents will (if they're somewhat decent) adjust to your tactics and camp the tower.
Besides, even if they don't know the trick themselves, they'll just assume your team is chaining jumps and counter it. So, your team should probably space your jumps out and wait before you keep jumping to the tower. Other than that, it would be pretty cool to have a krak-on roller that can jump onto the tower without any warning, and be able to kill all the enemies. If stealth jump didn't get nerfed this strategy would be way too OP.