"thank you for caring" is a perfectly valid and usable phrase in written English. It can be used to express gratitude for someone showing kindness and consideration for you or someone else. For example, "I want to thank you for caring about my situation and taking the time to listen to my concerns.".
"Thank you for caring".
So thank you for caring enough to complain or to praise.
"Thank you for caring for your Splendour passengers," one person posted on Jetstar Australia's Facebook page.
"Thank you for caring about our show and for being mad when you don't know things," the actor said.
Remember, all the soldiers who register are in a combat situation so there is no guarantee that all soldiers will write back or thank you for care packages that are sent.
Thank you for not caring about sleep training!
Thank you for all our caring nieces and nephews.
I love the desktop app, it’s always running on my Mac. Ludwig is the best English buddy, it answers my 100 queries per day and stays cool.
Cristina Valenza
Retail Lead Linguist @ Apple Inc.