No.
There's a grain of truth to that, but I also think that kids are exposed to plenty of stress and that adding additional stressors on purpose to try and toughen them up is kinda psychotic. You can teach kids to deal with and manage stress without just like putting them in a stressful situation without any preparation.
Putting someone in a stressful situation without giving them the tools to manage the stress isn't helpful.
Like I said, teach them the tools instead of sheltering them from the source. Participation trophy ideology doesn't help much, unless you're just too young, to ill prepared, or legit ill to deal.
Yeah yeah yeah let me guess you had tons of tressful situations and turned out fine.
I have no idea what this means.