People are confusing server tick issues, or misunderstanding abilities, or spreading rumors about hacks that they haven't experienced. There have been scattered videos from streamers showing speed hacks and HP hacks, however, there's no feasible way that the people doing this are keeping you out of gold. It's been frequently the same few people who were doing it in the feast over the past few years. Hacks are not as widespread as people are claiming.
In addition to the very rare full on speed/HP hack, there are addons that more people have access to that time or trigger abilities based on other events or situations in game (such as an addon that will trigger a MCH LB on a player that has low enough HP to be KO'd). These can trigger all kinds of things similar to user macros, however they don't do anything that a good player isn't already doing, and like other scripts that don't have extensive community testing, can be buggy and do funny things like fail because of LoS.
More predominant are people using multiple accounts to pad games. They use their account they are ranking up along with accounts they are attempting to get queued into matches with, where they can then manipulate the outcome by farming their plant. This has worked for a very specific few people in the past on Crystal DC. If this were happening to you you would see team members with ridiculously low numbers, sometimes zeros, or where they were obviously AFK running into a wall.