I get it from random supposedly “pro” cyclists from US, Brazil, China, etc. Check their account out and they follow 1000s of people and are members of 1000s of clubs.
The kudos comes in batches. Suddenly they’ll kudos the last month’s worth of my rides all in one go.
Probably fake accounts trying to build up followers and then sell them on. At least that’s how it works on twitter/FB etc.
Or just pros with ego issues.
I ban these from our “club” now. They clutter the leadboard with ridiculous amount of feet climbed and miles ridden per week that’s way beyond anyone in the Surrey Hills could manage, even with an uplift. I clean it out also of anyone obviously with no connection to the area.