I hear what you're saying; I've poo-pooed my share of concepts over the years. But I wouldn't have posted it if VW themselves hadn't come out and said, "we're making them in 2022." And the New Beetle is precedent for VW following through in four years, so I don't know what else you want. To be fair, VW's reputation for honesty has take a bit of a hit lately.
Concept cars are mostly marketing.