He didn't burn baby for fun, why would he subject himself to motion sickness for fun? Did a little bit of search and apparently he saw someone getting cut in half because of portal.

I'm pretty sure he will and did go through portal when necessary, else he wouldn't know portal give him motion sickness. While non-canon, his appearance in Monster Hunter World is via a portal.

I haven't played the game, but in the books he definitely uses portals. He just very strongly prefers not to, I have a vague memory of some incident that makes him not trust them.

I thought she was going to mention the toilet seat being up.

He does take portals in the games. But he is quite vocal about hating them.

https://youtu.be/Hvl3G3lu-BM

I've only played Witcher 3 but you definitely go through portals. He complains about it.

He was held for years in a sprawling underground facility, moved from a chamber to chamber and forced to solve riddles inside.

i bet he didn't even get a cake either

I'll always remember the first time I did the baby quest. The first time I did it, I was like, "well, see ya, Lil fella!" and pitched that little brat right in the oven. Spoiler, turns out, it was the correct thing to do. Otherwise, that shadow demon guy wont jump to you from the guilt Garalt (not I) felt. What a great game.

Well yeah, the cake is a lie

Dude lives off raw road kill washed down with drowner brain cocktails. I don't think the portal is why his tum tum is upset.

To be fair, the baby wasn't really burnt in the oven, that was just to trick that fucking Hym into leaving (although Geralt at this time was willing to make baked baby).

The aversion against portal travel resembles McCoy and the transporter.

I thought it was an innuendo