The singing is beautiful. But is the keyboard really necessary?
Is there something in Indian culture that demands that a Casio be inserted into everything?
Yamaha is also acceptable.
In all seriousness, it need not be so, and in many parishes it is not so. Before electricity, there was a tradition of singing chant with instrumental accompaniment. If you hear Syriac chant with traditional Indian instruments played well, it's lovely, even during the Liturgy. Obviously, the tradition is a capella singing, but such musical accompaniment was considered an adornment, something that made the sacrifice of praise that much more a sacrifice of praise. But it's not like every parish had trained musicians, so it was limited.
With the advent of the electric keyboard, you had the ability to have "music" in more parishes, which was considered better than "no music" (simple chant). Those who play may be musically trained, or may have just picked it up by playing badly enough that, over time, it became less bad. You can have everything from electric guitar to pipe organ just by switching the setting. You can even add beats, special effects, etc., and have a very entertaining service. Sadly, that's what it becomes: entertaining, if it is good, and if it is bad, a penance endured for our sins and those of our fathers, upon whom God has justly poured forth his hot displeasure.
There are other reasons for its use: "involving more people" in the service, which can be a good thing or can be merely allowing X to occupy the niche he has dug out for himself, it can be a poor emulation of Western church services in order to look less "odd", it can help keep people singing the right notes (our congregational singing can derail with just one or two loud but way off voices), etc. Frequently, though, it and the choir usurp, however unwittingly, the role of the people and Liturgy becomes something less than what it should be.
I don't have much of a problem with it in recordings, Youtube videos, etc., because it is not church. I have a problem with it if it is bad--always. But if it's played well, it can be anything from "eh" to "very good" (the latter is great in the car). My main problem with its use in recordings is that it encourages people to try and copy it in church, even when you tell them it was done solely for the recording and ought not be done in church.
Usually their hearts are in the right place, but even sincere, godly people are not immune to horrible taste.