Are people abusing premade by both being bad to get better teams?

My friend and I had a few matches today, and we are both reasonably good (both over 60% win rate, both good kda etc). The enemy duo was the same in all 3, and they were both average at best (45% win rate each actually).

However...

The 3 other people we got on our team... holy shit I don't know how they could be so bad. Different people each time, and all jjst terrible. Like, the best of them in 3 games went 2/10, but he also abandoned top lane after 1st drake and never went back, so we were constantly clearing waves for him. We also got 1 person in each game that was first timing their champ... super obvious as well, like an ori who kept ulting when her ball was attached to herself..

Meanwhile.. to list a few of the people the enemy duo got...

- 3 last season GM adcs in a row (2 of ours were peak e1) - a top 50 twitch jg who just ran around sniping lanes because they kept pushing out - on average, all higher rank people (we were getting 1-2 low emerald, and most of their teams were all minimum d4).

Is this a thing? I know its a small sample size, but is this actually a thing? Be bad and duo with someone else who is bad to basically guarantee that you will get 3 op team mates??