Lots of people here justify downloading ROMs by thinking that the format is obsolete and/or it doesn't hurt the owners of the IP. That may or may not be true and there are arguments for both sides.
The point that has been made over and over again is that Jeff is "one of us", has done great things for the community and that ---smurfing--- him over is a bad thing.
Buying a 60-in-1 or xxx-in-1 disrespects the MAMEDevs, which is why we don't discuss sources for them here, but a number of folks here have them (myself included). For my part, I already had a vertical MAME cabinet and just replaced the PC with the 60-in-1 -- no real change in effect on anything, except that I got to repurpose the MAME rig. Some folks would disapprove, but I am able to justify it to myself.
OTOH, there are enthusiasts in this hobby who do great things and pissing them off doesn't encourage them to continue. If that doesn't bother you then fine, but it bothers me, as it does many others. The sad thing is that most of the disrespect comes from emulation folks, which is just another reason for the divide within the hobby.
EDIT: I should allow that the disrespect thing goes both ways -- it is mostly the real coinop guys who use the xx-in-1 boards and that pisses off the MAMEDevs.
An alternative to your 60-in-1 analogy would be the case of cloning boards designed and manufactured by hobbyists, which does happen and, yes, people in the hobby do get pissed off when that happens as well. If someone were to clone jrok's SYSFPGA board, I would be rather pissed off. Same thing with Dave Widel's 440 Multi kit (although that is licensed by Exidy, so he would have a legal leg to stand on).
It all depends on what is important to you.