I don't think this is universally the case because I have received a few comments lately on my sporadic posts.
I tried Googling this problem and couldn't find an exact match. It must be a change in Blogger since I haven't changed anything for years.
If you have experienced this problem either on your Blog or in attempting to leave comments on mine, please let me know. Feel free to send me an email message at email@example.com.
Thanks for any help you can give me on this!