Both Boebert and Cawthorn represent districts with extremely high Democratic floors but very low ceilings. CO-03 seems like an easier lift to me to be honest but I doubt that either is going to lose, especially when both the Ski Counties and Asheville are likely to nominate a candidate with zero appeal to the kind of voters who actually would need to be flipped.
Don't know Colorado too well, but in NC-11 the ideal candidate would probably need to be 1) deeply rooted in a community outside of Asheville, 2) obviously extremely culturally Southern, 3) moderate on a lot of hot-button issues, honestly to the point of being right-wing on guns, and 4) able to play the class warfare game to some extent and tap into resentment around the rising cost of living in a lot of mountain communities. Needless to say, all of these are major disadvantages in actually winning the primary since basically all of them rub the NC-11 Democratic primary electorate wrong, and that's probably a big issue in CO-03 too.
Redistricting did shift a bit out the ski country. It seems the primary will now be dominated the Pueblo area. The main ski liberal candidate did drop out. It isn't impossible for someone from there to win but they are still a bit geographically out of the core of the district.
I obviously also mentioned MT's western district which is also really similar geographically and politically with similar Obama 2012 and Biden 2020 numbers a Clinton 2016 collapse.
Purple is the western R base of the district and has been stagnant between 2012 and 2020. Meanwhile Yellow is ski country/other tourism areas and is now the D base and shifted a decent bit left while red used to be the D base but is a bit more R now. Red and Yellow both have around 65k and 70k Biden voters while purple has 50k.
Purple is Trump +33, Yellow is biden +20 and red is Trump +3.
