Hi, think there’s always been a bit of a prejudice against the arranger keyboard ( or over here, anyway). The majority were sold in Piano/ Organ stores, basically aimed towards the home user. The so called pro shops that sold synths, guitars, recording gear etc really only stocked the low end arrangers . ( probably there was the odd exception). Changed a bit when the korg i2/i3 arrived in the 90’s, that was the only high end keyboard the boss Kept in stock.

I remember dropping into my technics dealer many years ago. He was bristling with anger . His feelings were really hurt. Haha.
He’d just had a young guy come in looking for a keyboard? He showed him the kn’s . Response was , no thank you , I’m looking for a Real keyboard like they play in the bands. Obviously he was after a synth,