No way, just because bitcoin is making upgrades doesn't mean alts will go anywhere. Granted, a lot will probably die off, but there are still better options than btc.
As a currency bitcoin is unsurpassed and we should not expect that to change at all, there are only some coins that do something better but there are not many coins like that, After all how many versions of Ethereum or monero do we need? We do not need hundreds of versions of the same coins this is why despite the huge number of coins I will say there are only a few dozen projects that are worth our investment and that can survive for the long term.