Its "completed" because it got cancelled lol. https://www.mangaupdates.com/series/z258bse/when-the-third-wheel-strikes-back
Chill dude, it's completed doesn't matter whether it wasn't cancelled, if someone decides to pick it up even then this will be considered completed, stuff like this has been going since last 11 years since I'm reading mangas, like anime are considered completed not cancelled even if the manga is going on or has more volumes
Naw dude I just think talking to you is like talking to a wall. You correct people that arent wrong, and then you double down on your correction. According to you, "cancelled" doesnt exist and only completed does. So theres no difference between reading something that's completed as it should have been vs something that was cancelled and therefore never reached its end. You push your perspective onto other people instead of letting them call stories that have been cancelled "cancelled". And if someone tells you different, you just get defensive and tell them to chill even when they aren't upset or angry at you. It's dismisisve and undermining. It's something plenty of people do. It's not a positive personality trait to have, but ultimately it's your issue to deal with.
People will continue to call things that were cancelled "cancelled" as opposed to "completed" because it helps others make an informed choice of what they're reading, even if you seem to be against that.
I have my opinion also on replying with a "you can't refute a good point", cause that has about the same effect as a "I win this conversation". But I'm not gonna get into that. It's telling when you call other people kids, just like children would. Have yet to see a mature adult do that.
Not that I think you care, but I can assure you I am chill rn. It's morning and I suffer from hypotension, so I can't be anything but lethargic with chills rn.
Kid- with this long paragraph , you have proven two points- 1. You actually are a kid with too much time on your hands. And 2. The fact that you wrote this huge paragraph just to prove you are chill literally works in my favour that you gotta chill. i can't write big para like you as I am a working professional and really can't be bothered but I hope you get busy in your life soon as well, till then really CHILL!

tf i was marinating it for years now i find that it got cancelled bruhhhh ┗( T﹏T )┛