Why? Apart from the fact that the product you linked to is not free – the sample they show is just converting CSV data into an MD table (something a one-liner could do with awk or sed, for free, btw).
I guess if the OP wanted to have a table, they could import their CSV into Excel. And they said that they have “over 2000 lines, which I would like to import as separate markdown notes”. That might mean “one line – one note”.
All assumptions, of course. If it were me, I’d script it. @BLUEFROG might come up with something that does not require coding.