While I didn't play WVM from the very first update, I never had the impression it ever was just a chain of porn scenes. More like what the games you mentioned (and that I like most of very much) might look like if they had a harem with 50 girls instead of ~2-3 love-interests.
Shauna and her problems as well as the family dynamic with Azel were introduced right from the beginning. There always were sections with 'just' a lot of talking too. Also, the sections with a lot of sex mostly occurred from that many characters being introduced in such a short time frame, not from the story itself not having no content besides those scenes - there were loads of story scenes in there.
Therefore we have some kind of gaussian curve. In the beginning, when getting familiar with the MC and his initial surroundings, there is little sex - then we get to know like 50 love-interests and start their paths in ~5 days which goes hand in hand with a lot more sexy stuff - and now that those love-interests are established too, everything calms down a little again.
The only thing changing this up a bit is if you play the cheat-route - which I understood from right when I started as 'If you want some more sex scenes right now, you can cheat - otherwise, you will get to those eventually later in the story - which is what I chose.