No, you did not hear that from me, nor is that a consequence of what I said. Scaling is not the issue either because scaling would be the problem.
Because bitcoin doesn't scale it will survive. Now we are forced to look for escapes, like the lightning network. But Lightning only alleviates, just like Altcoins do.
Moreover, Lightning will tie these Altcoins better together allowing atomic crosschain swaps (https://arxiv.org/pdf/1801.09515.pdf) improving the cryptocurrency network as a whole and Bitcoin leading the way.

Just look at the internet. If it would be a single electronic highway that had to cope with all traffic it wouldn't function. Instead it is a topology with many highways and subways interlinked with bridges, gateways, buffers and more.  Thats how the future of cryptofinance will be.