ufotekkie it's not really a glitch but it's a anormal mechanic that you can exploit against the original gameplay of this game, a normal mechanic that you can use for exemple it's instead of walking during scene in NG+, you can just crawl to get faster. The goal of the Glitchess run is to make sure that you finish the game the faster as possible with using the normal gameplay of this game.
About dying in Chapter 4 I don't think it will be faster to die, restart the save and continue, just make some headshot and runnign around will be faster
God bless you Wolfhunter and like said SnoozeYouzLose INFINITE AMMO IN NG+ IS NOT A GLITCH GODDAMNIT NOONE SAID THAT !! To have infinite powder THAT'S THE GLITCH !!
The rules are not stupid : They're simple to understand and logic not like all the other runs who're rules are so complicated that you just give up on the runs "You can do that but you can't do that". No f¤ck off man this ruleset are simple to play and understood.
Or maybe because he had a life and is not 24h/24h front of his computer ? Just wait and chill buddy
For now I suggest to stay this point in Stand by and wait someone to run it with Infinite ammo activate.
For the arguments you said about Difficulties I'm not convinced yet since it's seems a very personnal opinion and not a gameplay argument yet.
First of all why difficulty really matters is because more the difficulty is, more you need to make more damage and care more about your health, even in NG +, of we remove diffulcty categories this will be pointless since everyone will juste grind NG + Casual to be WR and the speedrun will be less interessting. Second I don't know much yet about this "Infinite ammo" but did you still need to reload or not ? If yes then I have no problem to accept to allow it but in the other case it will be very absurd that someone who activate it will grind the reload frame and grind some seconds against the one who didn't just because he rush left click like a retard without no reload? Lame . But for the rest I'm in your side except that we should told against the goldens rules of speedrunning: No cheat, No hacks, No home-made patches :)