And a company that is 100% supported by user funding (which Kagi is) can only do so much with resources available, which is the reason we have to pick our battles (read more about Windows/Linux/Android versions for Orion https://orionfeedback.org/d/2321-orion-for-windows-android-l... ) People often criticize us for doing too much (eg link in the parent of parent comment) but we also at the same time do get critique that we are doing too little :) If Kagi is not doing something, believe me, it is not for the lack of will or ambition. (Kagi CEO here)
Going out on a limb, but guessing that the chief hurdle a company like Kagi faces is willingness to pay. I'm going to guess the 'this is a great product, but I just can't bring myself to pay more than 20¢ per year for search' crowd is crowded in Linux. (I may be totally wrong on this!)