True as long as you count by the 7 point/second you get from a chair,. It may not be correct when you look at how crafting more advanced/useful stuff will give you more points anyway.
I do see the point though and maybe in this light it shoudl also be a combination of balancing the way progression.. progresses
Personally, I much prefer the passive time based (skill) training for games like this, it really makes more sense but with a B2P model that is really not an option.
Let's do some math. Let's assume you want to buy a Marmot-ST and you have all the T1 equipment unlocked and you want to unlock Mining lasers.
You need to go through cockpits, material point scanner and finally mining lasers. I tried and tried to get the numbers for these but unless someone on discord sees my request and sends a screenshot I'm going to have to do some educated guessing: Things around this seem to be about 2k yellow and gear each and around double in red. So something like 12k red, 6k yellow, 6k purple, and 1k blue (for the mining laser).
A marmot has 10 T1 box thrusters, 20 T1 manuevering thrusters, 3 T1 Fuel Chambers, 3 T1 fuel rods, 4 T1 Generator Units, 1 of each of FCU, MFC, Resource bridge and 10 batteries (which are bugged but let's count them) and a bunch of things that either give no points or very few points.
So those parts total 820 red, 1960 yellow, and 2560 purple.
Edit: Missed the FCU and resource bridge in my calculations.
So you would need to build 3-4 marmots just to grind to get mining lasers. You'd still have to buy many more ships just to get ore collectors and all the other things you want. Doesn't seem practical to me.