there's no solution that I can see?
In that thread there are 2 possible solutions outlined.
One of them is "The shutter sound changes when turning motion photo off and on, the option on my phone (note 10+) is 2nd to last at the top."
The other is "Have you tried Camera -> Settings -> Reset settings?"
Have you tried those items?
I wish I could share a screenshot, but when I click the link, there's only the original question and a thank you. I don't see any suggestions/solutions. so, i have an S9, so I don't know if those ideas will work.
Read my post above. Have you tried those things that I list?