I'm known to be a very cynical person. Have been since I was a kid.
It's never really ever been an issue because I've known how to balance my interactions. However I noticed when I became a lead, that some of my team members were emulating me.
However they were emulating the incredibly cynical side of my communication, and glossing over the constructive criticism and thought I'd put in to my communications.
Suddenly, everything started spiraling into negativity. Code reviews, feedback on work, repsonse s to cool new tech...
Off hand one day, one of my team mates mentioned how they were trying to emulate my critical approach but were getting resistance, where I was not.
I started analyzing it with them and realized that I'd inadvertently fostered a negative environment. My own communication wasn't negative, but people often cling to the cynical because it makes them feel stronger.
You see this everywhere. From hot takes dismissing new things, to people tearing media to shreds like CinemaSins etc ... It's easy to be negative and cynical.
Anyway since then I've tried to try and be more positive in my posting to outweigh the cynicism. I'll still provide the critical feedback, but I try and push more positive words in, and I see it having a good impact on how people around me also compose themselves.
Anyway point being...I think it took seeing a reflection of the worst of me, to have me try and work to put forward the me I thought I was putting forward.