I’ve been on hundred-match streaks over a period of weeks where it’s nothing but these kinds of full potato to full rage mode escalations. You don’t even have to watch the replay to notice it. And if you call out their cheating, they immediately go full rage mode and focus you for the rest of the match. I had one cheat/boost duo try to spawn camp me (and no one else on my team) across several matches because they were so furious.
I think a lot of complaints about “smurfs” are actually complaints about cheating, and a lot of complaints about “forced loss streaks” and “bad teammates” are actually about boost-related wintrading. Boost groups use the “avoid as teammate” function to force their shill accounts to be matched against them. If they “avoid” you, too, you’re screwed – it’s a guaranteed loss streak.
A long time ago, high-skilled players would boost accounts by logging in and playing them. Then Blizzard started banning accounts that logged in from multiple locations with varying skill levels, so boosters started working in stacks.
It became a big business, which made cheating inevitable. At some point, an aimbot developer started the arms race by getting into the boosting business. This made it much more difficult for the non-aimbotting boosters to deliver on their promises because boosting only really works when you aren’t matched against competing boosters. In response, more boosters started aimbotting, and there are enough of them now that they are often at war with one another in OW matches and IRL with DDoS attacks. I’ve been in the middle of that several times, with rage mode aimbots on both sides – you can’t even play legitimately when that happens. I’ve seen them negotiate a “truce” in match chat (agreeing to draw in round 2 to avoid a prolonged 5-round war).
If you think I’m making this up, then see for yourself. At almost any given moment of any day, you can go to LFG in the Overwatch client and find someone obviously or subtly offering boosting services (and also a ton of throw-to-Bronze groups, which are often boosters). There’s an /r/overwatchboosting subreddit, and a Google search for “Overwatch boosting” will show you the highest-volume boost companies. Or in any given match that seems like it’s a lot harder than it should be, just ask in match chat: “How much for a boost?” You’ll get prices, URLs, discord links.
There are probably still non-aimbotting players doing professional boosting, but the profit margin has to be considerably lower than a year or two ago. A good player with an aimbot is going to boost more accounts more quickly than a great player without one.
There is no way to stop non-aimbot boosting. You can’t ban someone for grouping with someone for the purpose of climbing, even if that “friend” is actually a “client.” But the amount of money in the boosting industry makes aimbotting inevitable. For that reason, I think a significant portion of the anti-cheat crusade at high ELO is actually about eliminating boost competition. The legitimate T-500 players want more boosting money and are trying to stamp out the aimbot-based boost operations.