Cardano got recently some attention by speculants but for fundamentals, Cardano is very weak:
Cardano is an old coin and based on outdated models, compared to advanced coins like Ethereum 2.0, Cosmos or Avalanche.
What made you say it's an outdated model? It's on POS and they are scheduled to release smart contracts next month. The same models being used (will be used) by the same blockchains you call as advanced.
I would compare Cardano to BCH, Tron or EOS. Cardano is a very similar age. All coins failed to deliever and will be dead coins soon. Tron is already abandoned because Justin Sun failed to meet his expectations.
Poor comparison. Ethereum failed so many times to meet deadlines on ETH 2.0 but you still call them advance.
Because most coins, when initially started, have a vision and try to look if it works. Cardano failed to deliever it's initial vision (it started already 4 years ago and failed last bull cycle). New coins will replace it and people holding Cardano now will pay a high price.
What's their initial vision that they fail to achieve?