I mean, sure, BUT I don't recall seeing so many threads about Fortnite community, Minecraft community or FIFA community.
Fortnite and FIFA both have had their fair share of issues but both are heavily regulated by the games' publishers which strongly discourages bad behavior and has stronger punishment for whatever happens. Fortnite is 100% online only, which greatly reduces the possibility for abuse, and FIFA is very heavily tilted towards online play and community building. There is no singular Minecraft community, there are many small communities around Minecraft but no all encompassing, competitive one. Most of the Minecraft communities that do exist are either completely online or moderated in part by Microsoft with the understanding that interest in the game skews younger than gaming at large which has resulted in them taking steps to ensure player safety. That is not the case with Nintendo who uses community members for an occasional marketing bit but nothing more. You also have the confirmation bias issue where fewer people on a site like this are heavily invested into those games so less about them will be posted here.
Smash is unfortunately a community which has every single disadvantage for the fostering of toxicity you could imagine. It overwhelmingly takes place in person, entirely at grassroots events that barely scrape by financially with no centralized authority for creating or enforcing rules, it is generally younger than most which means that many players tend to be more vulnerable to abuse (or in some circumstances more likely to commit it), and so many people within the community rely on it for their income, whether it's through tournament winnings, stream subscriptions, merch sales, etc. and thus place particularly high importance on continuing to be able to play it. Yet despite all of that things are slowly but steadily improving as awareness of these problems is becoming more widespread and people are being more motivated to ensure it's as safe for everyone as possible. Making harsh generalizations based on limited, anecdotal data helps no one and only makes it harder for the people trying to make things better.
