Whiff
I made Bakewell tart for my craft group 2 weeks ago after making sure no one was allergic to nuts. One of my friends said it looked lovely but wouldn't have a piece as she doesn't like cherries. I asked why she thought there where cherries in it. Turned out she thought Bakewell tart was what Mr Kipling's was . I put strawberry jam in it . And definitely no icing on the top. Used a very rich short crust pastry with the olive spread and egg yolk . And Franizpane. Everyone loved it . And they requested it again.
What amazes me people my age 66 had never had steamed sponge ,bread pudding ,bread and butter pudding ,treacle tart which is made with golden syrup not treacle, parkin had been a revelation to some. And yet these are all things I grew up with plus many other basic puds and cakes .
I’m surprised that you’re surprised! Not everyone had good/enthusiastic cooks for mothers (and Parkin of course is a regional thing - we had homemade gingerbread but not Parkin). Many people would have stopped traditional baking once they could buy ready-made. Guess what? Not everyone grew up the same as you.