This forum is certainly one of the best place to learn about blockchain.
So many people come here talking about all those new technologies which are supposedly better than bitcoin.
I hear that everywhere, even in my real life when people ask me about bitcoin "But isn't bitcoin using an old tech? slow and expensive. A better crypto may show up".
This idea is all over the media, and it is not entirely true. Decentralization and security are the main pillars of bitcoin, and trading them for scalability will only weaken bitcoin. And scalability is not an issue yet, as most of the time transactions are cheap and somehow fast (i am satisfied with 3-4sat/byte and about 2hours, which I get most of the time).