For sure Islam Makhachev is not really a likable guy like Khabib Nurmagomedov, I really think it is because he doesn't talk that much and his English was bearly understandable, but just like you have said he is a great fighter for sure,
Great fighters don't need bullshit, I like silent characters in the world of fighting except entertainment wrestling maybe they will play promos to attract the audience, Islam Makhachev is not a replica of Khabib so don't compare the two too much, they still have their own characters, but they are the greatest fighters and fighters undefeated, anyone has to admit their greatness, they ruined the opponent's undefeated record and any fighter who wants to increase the number of wins then don't oppose and accept the fight from Islam Makhachev.