Bitcoin is not obsolete... and its too having stuff and smart contracts through stacks...but the value of BTC is that of currency and hedge against fiat inflation and its gold 2.0... don't degrade Bitcoin!!
Its pure crypto and always legendary and must have in all portfolio.
After collapse of Terra... can't comment on Cosmos, although its promising and has more than I know GO google you say and all that... we will know in time, its important that project is not boasty and provides value... osmos is very modest, that's why I love it still and I think lot of gems are there exploring the inside projects!