Earlier quoted context omitted.
To be fair, though, the lightsail instances that are subject to oppressive throttling aren't really a good comparison. Those should be dirt cheap, as they are useless if you use them in almost any real fashion.
I had some personal projects a while ago that I used to run on Linode, I later moved them to LightSail and I never noticed any performance difference in these projects running there. These were Ruby on Rails projects.
Their fastest instance type is still in the bottom ~15% of this list for example: https://www.vpsbenchmarks.com/screener