Bitcoin is going 9yrs old, so far no alts surpasses Bitcoin. For 9yrs it remains the king. While Bitcoin is going down, no alts remains strong. All alts are crashing too. This is the best indication that Bitcoin has no replacement.
Exactly. Theres nothing can dethroned bitcoin as the king of all currency. They might overpass the price of bitcoin but one thing for sure, they cant replace bitcoin because they are just made after bitcoin.