I havent heard of any claims that segwit and LN would be sufficient. It is very clear mathematics that they cant scale far. However they provide safe way to scale for short-term. Long-term solutions have to be found. If they are not found there is thousands of shitcoins claiming to solve the scalability issues better.
I agree that mathematically, they are not the scaling solutions they were touted to be, as they both have a direct dependence on the base layer size, among many other issues respectively.
You did mention yourself, under however, that it can help scale in the short-term. Many of the 'tech gurus' were essentially saying that Segwit was the short-term fix, and LN wich would take 18 months(seemingly a perpetual timeframe), would be the medium-term fix. The BTC maxi thought leader morons, like Tone Vays, who are technically ignorant, were selling noobs that both were a complete fix. I didn't choose the thought leaders for BTC.
