Demotion Shield

So recently if you didn't know they added some stupid demotion shield, I've had it for few days but never ended up getting demoted idk when it will do anything. but I won like 10 games in a row and it finally went away, I lost ONE match and was at like 84lp and got this retarded thing again. you're telling me I lost ONE ranked match and that's one too many. I knew their ranked system was heavily flawed but wtff