It seems like “pride” should be reserved for things like acting ethically, being environmentally friendly, treating employees well, making a positive impact on the world.
The platform you chose to build on is more of a business decision. One that I’m guessing Sketch is increasingly trying to rationalize to themselves.
Being proud they build a native app isn’t going to help them compete with Figma.
It’s a nice idea to think that pride is about acting ethically like how you described, but technically, the definition is “a feeling of deep pleasure or satisfaction derived from one's own achievements”. So as long as it’s not about something that they haven’t done themselves, they can feel proud of it.
They might not be able to compete with Figma, but to me personally, I definitely appreciate native apps way more than shells around web based one, which is why I prefer Sketch to Figma.
The platform you chose to build on is more of a business decision. One that I’m guessing Sketch is increasingly trying to rationalize to themselves.
Being proud they build a native app isn’t going to help them compete with Figma.