Meh, the quality of the impression wasn’t what made me cringe so much as his overall vibe. He seemed really unduly pleased with himself. Anyway, to address the difference between impressions and acting, can you imagine if Chris Pine had done a Shatner impression for his Kirk? That’s what Ingruber as Han would amount to.
This Han Solo exists in same timeline as OT and is not a reboot of the entire franchise.