Good evening
One thought I have on newcomers to the hobby versus, shall we say, seasoned veterans. Over the decades the detail and quality of kits has improved drastically - in the 1970s or even earlier, kits weren't particularly detailed and frequently used a RTR chassis. I won't say it was EASIER to build kits then, but I think it fair to say they were less complex and it was acceptable to be of lower detail that would pass muster today (a common phrase for older kits is they were good for their time).
So someone who has been building kits for many years has not only built up that experience, but likely started with relatively less detailed kits and as advances were made, found it fairly straightforward to up their game with their builds as they already had the basics mastered.
A newcomer doesn't have that luxury and unless they build a few older kits and accept the lower detail and accuracy for practice then they have to hit the ground running as it were.