HomePod Siri requests are corrupt (Shambles)

S/W 15.4

Siri is no longer playing nicely with HomePod & HomePod Mini's.

Here’s just a few examples of Siri's failures from last couple of days…

# Goodnight scene no longer works - Now Siri just replies something like... “Nighty Night” or “Goodnight”

# Request…”Desk Light” - now Siri replies...“Which room?”. There’s always been just 1 desk light

# No longer able to execute… “skip track” on HomePod in Dining Room, but can on HomePod Mini in the kitchen

# No longer able to execute…”Don’t play this track again” on HomePod in Dining Room, but can on HomePod Mini in the kitchen

# Request…”Kitchen Lights” - Siri's response now is…”I’ve set the lights to xx%” 

# Request…”Kitchen” - Siri's response is…”It’s dark in the kitchen”. No it isn’t, I have just turned the lights on and its the middle of the day with bright blue sky outside.

Many other requests return… “Ummh that’s taking too long” / “Somethings gone wrong”

Same requests on iPhone - almost always no problem.

It seems like it’s getting worse with the last 4 updates

Siriously (see what I did there?) come on Apple, this is embarrassing to the point of why even bother. Shudder to think how much spent on Apple Hardware, which is lovely, but if the software stinks then what’s the point?

5 minute Google Search produces sooooooo many Posts on this Forum and elsewhere.

Anyone ideas on workarounds, whilst wait for yet another Update? Seems like HomePod Reset makes zero difference.