Crowds in the past have enjoyed Moonshield and Artifacts just fine - why they play Graveland nonstop instead of those is beyond me. Whilst Graveland is a fine song, in the context of TJR it's a pretty mid track. Almost any other song would be more interesting.
The 'crowds don't react' excuse has always been that, an excuse. In the end it became a self-fulfilling prophecy. The band ignored their older catalogue for literal decades, those older fans then drifted away, so of course crowd reactions will lessen over time on the rare occasion they throw in a really old track. The majority of the scene kids who got into IF through CC or ASOP aren't going to care about or like TJR, especially if those songs are never played live.
I guarantee if Moonshield, Artifacts, Episode 666, Jotun, etc had been regulars on the set over the years they would get great reactions now. If they started putting them in from now they would get solid reactions soon enough, because they are inherently fantastic tracks and sound awesome live.
It was sad seeing Stand Ablaze get barely any reaction at Borgholm Brinner, but that's just what the IF fanbase is nowadays. 95% of people who still care about the band won't ever have heard Lunar Strain or Subterranean, and would probably recoil in horror if they did listen to them.
The reason TJR songs haven't been played live historically is simply because the band kept releasing increasingly commercial albums that brought in increasingly commercial fans, and they catered to that audience in a live environment. Fans of their best music were left in the dust. Anders may well like TJR and maybe it is his favourite album, but the commercial success of the band has always come first. I'm not saying they were right or wrong to do that, but it is what it is.