I assume you mean this person:

Yes.

[b]Gary gjs4262@aol.com
Most striking points are flag blowing

An engineer who apparently knows nothing of inertia?

or this person:

Hadn't seen this one.

donalw@freesurf.ch
So 30 years ago we were landing a vehicles 5 times the weight of a Toyota Land cruiser on the moon ...

Are they making Land Cruisers out of papier-mache these days?

I don't have one of them, but I have a Ford SUV that weighs about 5,800 pounds dry, and that's almost exactly twice the landing weight in lunar gravity of the typical Apollo lunar module.

... and we seem to have problems landing a little craft on Mars today.

Gee, I wonder if there are any differences we could identify? How about, say, an onboard expert human pilot? Let this guy invent a car that can be driven at 200 mph into a garage by delayed remote control and then talk about the comparison.

In engineering terms 30 years ago was prehistoric.

Not really. The F-14 Tomcat and the Boeing B-747 were designed almost concurrently with the Apollo lunar module, and we still use that technology. I strongly dispute this opinion.

They had almost zero computing power whatever

Largely irrelevant. The Eiffel Tower is considered an engineering marvel, and it was done without computers at all. The Norden bombsight is an engineering marvel and it wasn't a computer. I used to have in my collection an old artillery trajectory computer from an army tank. It's a simple set of geared knobs and dials. Of course the M-1 Abrams uses very sophisticated techniques for aiming its weapon, but that doesn't mean we couldn't hit targets with knobs and dials.

You can tell this guy must be fairly young. People today can't imagine how we ever got along without our multi-gigahertz computers. Just because we do it with computers today doesn't mean it was impossible without computers. Just because engineering today is inseparable from computer-aided design, computer-aided manufacture, and computer-aided operation doesn't mean we didn't know how to do things before computers.

Besides, at any given point in time people have said that the computing power of yesteryear was practically useless. I can remember when the Intel 386 was going to take computing to a whole new level, and now we use that thing for microcontrollers.

So where was all the money really spent

Well, according to the public books of Grumman, Boeing, North American, and other companies, it was used to buy their hardware.

a link to the NASA page where the originals are held

The "originals" are not on a "page" anywhere. Another indication of relative youth. I'm not trying to rag on the young. But certain young people do rather humorously think they know everything. It's often interesting to hear them tell us how we couldn't do anything before the advent of certain modern conveniences.