Not the same. Sports have refs, coaches, and parents. Yes it is possible to get a bad outcome in sports but there is no container in competitive online gaming. It is Lord of the Flies by design.
Gamers have their clans too and people can get kicked from that. You can get mic banned or worse too for being too flagrant. You can lose real money if microsoft bans you and you had a bunch of digital games for example. In sports its not like all the interactions are going to be moderated either. Sports are pretty notorious for talking crap about the opposition, but it can get much worse than just talking crap. I heard a lot of terrible racist things too during my time in high school sports just 10 years ago, from players and parents. There are a lot of nasty people out there and they perpetuate those views on their kids.
Actually in competitive scenarios, e.g. tournaments, there are. Add to the fact ranked play is generally better behaved.
Speaking of parents, from my experience playing hockey, they are usually the worst offenders. Yelling at not just the refs, but the kids too. I've seen intimidation in more than one occasion.
At any rate, concern over the prospect of kids being "angry" is a weak take.
You think these eight-year-olds are playing video games in tournaments?
As someone who coaches elementary school sports players, I can tell instantly the ones who play online competitive video games and those who don’t. Sample size is maybe only ~40 kids, but I’m convinced.
Maybe it improves behavior later but the ones who do are initially the worst sports I’ve seen in my life. I have to spend time before every practice and game reiterating stuff like “it’s not ok to pretend to teabag the other players”.
I’ll agree parents have changed a lot since I played. I think the poor example they set influences this generation of parents.
I am not concerned over them feeling angry. I am concerned over yelling, swearing, mistreating younger siblings or other family member after playing. If that does not happen, fine. But when it does happen, younger sibling or grandma are more entitled to not be target of aggression then someone else of gaming.
The exactly same way as with adults - whether they feel angry does not matter. Whether they demand everyone else to tip toe around them after/during playing, whether they loudly swear or hit the table with fists does matter.