They haven't been "inbred" as you put it since the 19th c. There have been what we would call outcrosses in the horse-and-dog world for at least 3 generations now. Unlike the Hapsburgs (who of course died out due to actual linebreeding - not inbreeding.)
As for "worship" - more silliness. They're an interesting historical family and have done a lot of good, much of it by stealth without sounding a trumpet before them in the marketplace a la St. Matthew. Other than my dad serving in the British Army by accident, our last ancestor left London in the 1800s, so no particular tie to them. But their job is hard work with very little privacy, and I respect them for that.
And their wealth is largely derived from inherited, non-royal sources (Duchy of Cornwall, etc.) and property owned outright. They have paid taxes on their income since I think the 1970s, when Queen Elizabeth II voluntarily began to do so. Unless you want to decree that all the wealthy in the country "turn over the wealth" -- in which case you're simply a communist and I don't know what you're doing here.
All praise the royal monarchy. Grovel before them. /s