@Mortal-san
Do your lobby really have half pred/master/diamond trails when playing solo? What server are you playin on? I can have lobbies like that when I play full with my premade 3-stack squad with two expreds/exmasters friends and we play very well. But when I play solo, my lobbies are usually like gold with a 10-15 Diamond-to-Pred including us, and I have 2.4 overall K/D. If you have both lower peak rank and lower K/D than me, I find it very strange if you would have harder casual solo lobbies.
I honestly think you kinda forget that skill is relative. A silver player will get melted by a Platinum player, and a Platinum player might get melted by me just as I get melted by some preds sometimes. So when you think those high elo streamers get bot lobbies, its really the same lobbies and you and I, only that their skill is so high that they steam roll everything. Guys like Imperialhall smurfs in Predator games so OFC they will steam roll everyone and everything in solo pubs.
But anyways; Ofc I understand that everyone would want the best badges but the reason why they are the best is because they are the hardest to get. Would you really feel that good about them if you knew you were "handicapped" and matched with easier opponents to get them? I know I dont. I have several 20 kills and 4k damage badges also on my smurfs but I dont even wear them because I think that would just be pathetic and embarrassing since I got them when I was smurfing.