I think what Big Fatty is saying is that finding them in a game can be quite a lot of fun and turns the game into a bit of an RPG !
I dont think he is promoting glitching by any means.
We all know it is wrong and we all hate it. If we see it, we leave the game and remember the culprit (maybe after some revenge to point out the error of their ways).
I have certainly never used a glitch in battle BUT I did try and get in a couple of wel publicized glitches to see IF I could do it and what it was like. I managed to gte behind the building on Eder Dam BUT I was never been able to get on the roofs at Rouen so I've given up...
I'd just create a game and roam around by myself trying to do it.
If anybody joined I would leave immediately or start a proper battle as I would be too embarrassed to have somebody catch me thinking I was a real glitcher!!
So find them in your own time out of curiosity BUT never use them with others in the game!