Bitcoin was only supposed to be a proof of concept that could inspire better coins with robust privacy and end user control over the blockchain. Bitcoin obviously wasn't designed for millions of transactions per minute with your average Joe always able to profitably mine it or even store the whole blockchain. It only gets worse with lightning. Monero got closer to the goal by adding privacy and a more pro-consumer proof of work algorithm, but the privacy could be more robust and the algorithm has long been unprofitable for ordinary users to mine with.
Bitcoin was only supposed to be a proof of concept that could inspire better coins with robust privacy and end user control over the blockchain. Bitcoin obviously wasn't designed for millions of transactions per minute with your average Joe always able to profitably mine it or even store the whole blockchain. It only gets worse with lightning. Monero got closer to the goal by adding privacy and a more pro-consumer proof of work algorithm, but the privacy could be more robust and the algorithm has long been unprofitable for ordinary users to mine with.