You're arguing adjacent yourself, everything you have said supports the reality- no blockade, the shortage of supplies is because of lawlessness in Nepal.
If India wanted to blockade Nepal it could do easily and it would be a total blockade, that some supplies are going through shows this is not the case. Not to mention a blockade is not a trivial matter, China, UN, US, EU etc would all be hammering India for such an action and yet PDF is the only place I have seen this matter taken seriously.
This is beyond a bad joke.