I'm with anyone who says 1 table for an entity (e.g. Suppliers). If anyone has to ask about that, then I have to believe they are as unaware of what is proper as anyone who requests that it be done. Since I know it should not be done, if I had a client that insisted upon it after I advised against it, I just might suggest that they need to find another developer. That's because when things go wrong, those who won't allow proper development are the same people that will blame the developer for the ensuing issues. If you're ok with setting yourself up for a bad review or reference, then go for it.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.