LOVE should not be used in the Progressive form?

 Today, some ESL teaching materials and websites are still telling us not to use Verbs of Emotion in Progressive form: 

================

DON’T USE THESE VERBS IN PROGRESSIVE FORM:

ENGLISH VERBS THAT CANNOT BE USED IN THE CONTINUOUS OR PROGRESSIVE FORM

Verbs of Emotion:  love, hate, prefer, mind, like, dislike, please, surprise, astonish, impress ...

(https://www.englishcoursemalta.com/.../english-verbs.../)

================

But as the following screenshot shows, it's perfectly OK to say 'loving' (not just McDonald's "I'm lovin' it"). 

Below is an example I like to give in my Language Awareness course to show that even 'hate' can be used in the Progressive: 

If a woman says to a guy "I'm hating you for what I've done for you", the guy still has a chance. But if it is 'I hate you for ..." that the woman says, he is in real trouble.