Even if your assertion is true (it isn't as accurately described by the sibling poster), this would neither be a weird way of "flexing" it, and does not at all come across as 'showing off' wealth and idleness as you assert.
The post says far more about your envy than anything about the video. Nothing there is out of reach of some years of hard and smart work, and if you adjust your attitude you'll likely find yourself enjoying a similar position in some years. (NB: most tools are available in very good condition at machinery auctions and re-sellers for far less than original price, and his machines are clearly well-cared-for older examples; and he mentioned some donated/loaned from a sponsor.)
The post says far more about your envy than anything about the video. Nothing there is out of reach of some years of hard and smart work, and if you adjust your attitude you'll likely find yourself enjoying a similar position in some years. (NB: most tools are available in very good condition at machinery auctions and re-sellers for far less than original price, and his machines are clearly well-cared-for older examples; and he mentioned some donated/loaned from a sponsor.)
Edit: augment the NB