Nothing wrong with Lego releasing a product that will make money, but I question if any kids today know about Concorde let alone care.
(Not that a kid cannot buy a "serious" set and that an adult can't buy a "whimsical" set.)
Nearly every toddler I have come across knows about dinosaurs before they have ever set foot in a museum. My kid knows about the Saturn V because of the LEGO set. He loves the Space Shuttle because of a picture I took at the Smithsonian. His mind will be blown if/when we visit Udvar-Hazy.
The kids are going to be alright.
> Spend quality time with premium LEGO® sets designed specifically for adults. From wonders of the world to movie magic, intrepid space exploration to pop culture icons, luxury cars to architectural masterpieces, there’s a LEGO set waiting for you. So unplug, unbox and unwind. This is your zone.
Concorde specifically has a recommended age rating of "18+" [1].
You're completely failing to communicate, and your worry about whether people like or dislike your post seems to be stopping you from just explicitly saying what you mean. I have no idea what you think you're trying to say, but nothing you've said so far seems like some kind of revelation about lego that we need this slow revelation.
Just say what you mean, completely, with multiple sentences, in a complete logical argument.