Placing the order is actually what they are meant to do. Then it goes to Openreach who will see if a copper pair to the exchange is available and will move the phone line onto that and let the ADSL order progress, or if non-available will fail the order.

Kingswell has copper overlay, but not enough for every line on the TPON.

Fujitsu did a trial running a small DSLAM alongside the TPON hardware, but cost wise possibily not worth it, but with BDUK things may change.

With FTTP nothing stopping you having just the fibre for internet

the retail providers may prefer you to take a voice line rental, to help underwrite cost of data usage.