No, it isn't blasphemy... many "modern" musicians will do that.

However, by notating it in a modern way, you lose some nuance and add in extra "interpretation". For instance, most of the music is of a form that is polyphonal and cascading... with no real "lead" voice and no strong sense of a beginning or end... however, with the introduction of bars it already gives a sense of a beginning (the starts of the bars), a sense of on/off beat and all of that sort of thing... just to name a few things.

So, most people who play "Classical music" would do that... however, in our specialisation, we avoid doing that.... as the resetting of the music score does introduce a lens of sorts.