Was Blake Carrington deemed a sexy man ?

I have no doubt that my mom double-clicked her mouse to him in the early 80s. She would have been around 50 when Dynasty came out.

Yes. For his age (63 years old when Dynasty started) he was looking very good. Not many men can look this sharp and well kept at that age. His face and posture was perfect. Thats why Blake Carrington as character was popular. Harrison Ford is rare example too how men in his 60 and 70 years old looks very good.

There was this thing at soap operas of that era when 55-60 years old rich hot man was Head of House and main star of show. He had rich children who were having problems and rated people. And old man himself was still hot enough for women of middle age would thirst for him.

Same thing was in Santa Barbara with CC Capwell
https://www.google.com/search?client=firefox-b-d&sca_esv=569212662&q=CC+Capwell&tbm=isch&source=lnms&sa=X&ved=2ahUKEwiv0937882BAxUwLBAIHbWcDskQ0pQJegQICRAB&biw=1395&bih=908&dpr=1

Because remember that those kind of soap-operas usually watch women between 40 and 65. And they would find those men fine.

I seem to remember him being very popular with certain women.

I remember John Forsythe was amused that he was sex symbol in his 60's.