Correct, I use whatever gives me the correct thickness for the job, as you do not want rattling glass or loose balls.
You see so many allwins with loose glass, not great
On a recent large arcade machine I used Anti Bandit laminate glass, so double thickness laminate, not because of safety, but because it matched the thickness I needed. Problem is laminate is more expensive and difficult to cut, so plate or toughened to correct thickness would be best option. Also it is all metric now, so old imperial measures not available and sometimes end up either tight or too loose... get your vernier calipers out.