Sandfall CEO isn't saying they're going to be incredibly innovative either. They're saying they'll make the games they want to make and I'd argue the first 3 Supergiant games followed the same logic, they made the games they wanted to make and while being samey they're also very distinct to a point where me enjoying Bastion didn't translate to me enjoying Transistor or Pyre.
I'd say they didn't start to feel really safe and samey until Hades when they started to incorporate player feedback into their development cycle. I'd even go as far as to say most players don't want brave innovations and when given a choice they'd gravitate towards safer games. If brave innovations were appealing Noita would've been far more popular. Noita is such an innovative game you don't even understand the scope of its innovation until you're 60-100 hours in. I don't even know if there's ever been a roguelite metroidvania before Noita.