Whether or not you count $1 million and 10 guys working for a year to create a proof of concept video as development, the simple fact is that it is not in any way comparable to full on active development with entire studios and 200+ people working full time. All the other games in that graph counts just this (full studios working full time on the games in question), so including the initial 1 year of work for SC makes no sense in this context, or do you also think we should count Elite: Dangerous as having taken 14 years worth of development (probably upwards of 16 years by the time they deliver on the features promised back in 2000)?
The second paragraph is really quite misleading. None of those games are being developed with just the funds mentioned here (600k for Descent and 244k for Everspace), but has had significantly more funds invested in them from non-crowdfunded sources. Crowdfunding for the vast majority of games, is only meant as an additional source of funding and as a way of proving the viability of the project to external investors, it is only a rare few games like SC that get the entirety of their funds from crowdfunding.
Take
Bloodstained for instance. They initially asked for just 500k, but as the creator later
revealed, the full budget for the game was in fact $5 million, of which he had already lined up $4.5 million from investors. Luckily for them, they managed to secure $5.5 million through Kickstarter, and were thus not dependent upon external funding, but with games like Descent and Everspace only just hitting their targets (assuming Everspace doesn't make a massive sprint towards the end), they will still have to rely upon external investors.
You start talking about the original kickstarter and the initially promised release date of 2014 (as part of a subject on how long SC has been in development for). Confucios pointing out that the reason behind the delay in the release date, stems from the change in scope, is not changing the subject. It is (as Confucios pointed out) bringing context to the subject, and not (as you claimed) irrelevant to the subject.