It’s possible also that people may be wondering why we use peat in the first place. Roll your sleeves up for a long thread..
Pre WW2 the main trade in plants was bare root stock. You went to a local nursery in spring and autumn and bought your plants, went home and planted..

Cont. this was a very low carbon way of gardening but, if you were a nursery owner pretty tough to make a living year round. Most nurseries were diverse, growing cut flowers, fruit, veg etc.
After WW2 technology started to become more widespread in horticulture.

Cont. three things arrived almost simultaneously; the plastic pot, the potting machine and the use of peat as a component of compost. The plastic pot enabled growers to package up their plants and ship them wherever, all year round. Gone was seasonable limitation.