I can't tell, you, but I can say we see it all the time in Hoyas. It doesn't seem to hurt anything. It *may* be part of their response to harsh conditions. I bet any new leaves will have less of it.
Hi, Everyone
Maybe the leaves are sun damage like" freckles skin" or diseased???
*Lucy 68 question: Did you purchase the plant with red spots or is the plant receiving direct sunlight?
I reached out to the seller. I will let you know what their response is...
Thank you for your responses..."^:^"