There are many problems with the reasoning in Pascal's Wager, as well as the unsavoury theological assumptions it makes. Like most arguments for the existence of God, it seems more about reassuring existing believers than converting non-believers. This is because in order to convince a non-believer, a theological argument must both prove that the god it argues for is the One True God and disprove all other possibilities. People lacking a belief can see the potential for multiple gods existing, in fact an infinite number, but believers are constrained by their existing view that there is their god or no god. Only in this latter case does the reasoning behind Pascal's Wager make any sense.
In Bayesian terms, this can be stated as saying non-believers attribute uniform prior probabilities to the existence of any particular god; all equal, and all infinitesimal. Pascal's Wager alone cannot update these probabilities as the reasoning applies only to the One True God out of an infinite number of possible gods. Without any further information to whittle this down, the odds of inadvertently worshiping the wrong god is a practical certainty. Only when the probability of a particular god existing increases does Pascal's Wager become useful. For instance, if you could assign one god even a mere 1% chance of being the One True God then it would make sense. Hence for anyone constrained by a bias towards a particular god, the Wager is far more clear cut and supportive of their belief.
The biggest irony of Pascal's Wager as far as Christian apologetics go is that even if it was completely sound it should then suddenly become a huge disincentive for convincing an unbiased party to worship YHWH specifically. By definition worshiping the Judeo-Christian God requires you to give the finger to every other deity or potential deity thanks to the intolerance that is the First Commandment. In the absence of evidence for a specific deity, the theist-to-be would be better off directing some worship to one or more proposed deities that do not require exclusive worship. Pascal's Wager being a lynchpin of Christian apologetics (rather than being a shibboleth that must be denied at all costs) is simply yet another case of cognitive dissonance engendered by Christian privilege.