1.I always listen to the Belgian interview, and like with Herrada yesterday, the Spanish, and with Ganna, the Italian etc.
If he's easy in Roglic' wheel, it implies he thinks he Could (not Would) have won and is giving arguments why. If he couldn't follow Roglic and had 10 meters at the line, he would have said he wouldn't have won anyway. He just says it like it is. Many times in interviews when he didn't win, he said he didn't have the legs.
2. Again, he explained why he accelerated: in the first place to keep his position, and second, who knows there would be some time gaps. It was a no-risk move in a stage where no one wanted to risk it.
3. His wheel was slipping, and once at speed he stayed at the same distance of Roglic. Should he say he couldn't follow Roglic because he felt weak, while he wasn't? Again, he says it like it is.
You can call it excuses, I call it post-stage analysis. He could also just say nothing or give an explanation without saying anything, e.g.
1. when Roglic won he could just say he sprinted and Roglic won. That would be saying nothing, because that's what we saw on TV. But the neutral fan would ask himself: why did Remco pull all the way from the top of the climb to the finish and do the perfect lead-out? Why was he riding like simply riding to not face a time gap and come in quickly?).
2. In the stage yesterday he could have said he accelerated to try and gap other riders. Everybody knows though that his acceleration was simply to late to try and create any reasonable gaps. By adding some more info about his rationale (making sure he doesn't get attacked and he retains position) explains to the novice cycling fan why he did what he did.
3. In the stage where he said his wheel slipped, he could have simply said Roglic was faster (we all saw that Roglic got the kick). But that doesn't explain / say why he was about to overtake Mas and suddenly didn't. Now Remco explained it, it all made more sense, and Remco stating he felt great indicates that this shouldn't be seen as a weak moment, just a small mistake (in the same order as missing the best line in a curve and getting gapped etc.).
All these little snippets of info is what makes the race more interesting. So just be happy to have those details, and if you don't like them, ignore them / ignore Remco and this forum topic. That makes life much simpler and for some, much more enjoyable (living in their simple, comfortable bubble), it seems.