First, viewership isn't everything.
Second India is still far behind in building the proper infrastructure that KR and SEA already have, due to competing in other Riot events.
Third, skill wise, India is probably the furthest behind the two.
Fourth, China, similar to KR, is already a major region for Riot and does not take as long to develop and SA.
Fifth, chill man, Riot are doing their best and not everything will be perfect the first year (shown by Berlin seeding). I remember all the people being grateful that SA even got a LCQ slot. Where are all of those people now?
If it were up to me, I would have given SA a SEA or CN slot but sadly it isn't. At least be thankful that Riot gave SA a chance