Almost every ambitious altcoin claimed this "dethrone" thing but still up to this date, nothing succeeded in doing so. Let's just face it that BTC is really too strong and stable, and the community backing it up is so solid. I do not say that BTC won't be dethroned. Nothing is indispensable, especially in this fast-paced crypto sphere, but definitely it's not IOTA. There are lots of good crypto out therethat have more huge potential than IOTA like ETH, BNB, XLM, EOS and LTC, ADA.