You have clearly only started watching cricket in the last few years if you think Sachin does not have a variety of strokes or was ever interesting to watch.
If you are talking only about current form you are right but whats interesting is many of his slow grafting innings are resulting in more team victories than when he used to have a very high strike rate in tests. So whatever matters for the team is more important than elegant strokes.
Looks like sachin can never win either ways. If he scores at a higher rate, well its not a match winning innings as team loses, he is selfish, cant see the team through, etc.
If he is cautious, does not want to expose the tail, does what the team wants, well he is boring and clearly over the hill