"Low tech capacitors" oh lord. When you have the space, electrolytic are *just fine*. Picture is too blurry for me to tell which caps those are, they might be low *quality*, but "low tech", no. Tantalum are a FAR higher cost. For M.2 clearly size is a huge issue so tantalum wins, for 2.5 in drives, well they are easily half empty space these days.