OTOH I sourced all the parts for a kit car and after I'd put it together I was pretty certain that I HAD built a car...even though the chassis and most of the bodywork were part of a kit I bought rather anything designed and fully fabricated by me.
Not that it matters. I've built planes from my own designs in all sorts of materials, built from kits, assembled ARFs and flown RTF "toys". All of those seem to me to be a legitimate part of the hobby I choose to pursue. If anyone is foolish enough to believe that one way of getting a little plane flying is the right way and all the other ways are in some sense "wrong" I feel rather sorry for them. Whichever single version they they insist is right they're missing out on a lot with all the others