I don't really think that Redditor knows how game dev works. Pokémon, like most other development studios, gets a whole lot of work done through outsourcing. The number of people involved with Sword & Shield is guaranteed to be way more than just 143 people, and it doesn't really behoove a studio like Game Freak to expand when their output outside of just Pokémon is limited in scale.
Game Freak has been expanding. They even own subsidiaries
The 143 staff is just full-time and contracted staff. It doesn't count freelancers (of which there are many), interns, temporary staff and so forth. It also doesn't count those that work in their subsidiaries
As listed in their site, listing only full time and contracted
In April 2012, they had 90 staff
In April 2014, they had 73 staff
In April 2015, they had 81 staff
In April 2016, they had 108 staff
In April 2017, they had 118 staff
In April 2018 they had 143 staff
They are expanding, and don't forget that staff numbers are irrelevant. I keep seeing people say that in regards to the animations. How would a scenario writer help with that?
This makes me more curious about Sword and Shield-if Gamefreak had to recreate all of these models from scratch, then why didn't they take this opportunity to change Pokemon's artstyle? It would have made this game look far more appealing and provided credence to their initial statement that they improved the graphics as a response to them cutting the National Dex.
Maybe they like this art style?
That's why I said "if what's said there is true".
And according to
this interview, Sun&Moon had a team of 120 (as said by Masuda himself). Sounds fine for a 3DS game, but for a Switch game it's a whole different league.
Well 500 individual people are listed in the credits...