The 'debate' that follows the King's speech is as much a fiction of 'democracy'' as the fiction that the king is ruler of the country.
What those who are painstakingly explaining the historical reasons for the symbolism involved in the State Opening seem to fail to understand is that , as I keep trying to explain, the monarch is in parliament in the 'person' of the Executive (i.e the government). The only thing excluded is the monarch's physical body, not their authority.
The Executive rules by virtue of powers delegated to it by the monarch. But, as Parliament (the whole body, Lords and Commons) is sovereign it can resist the tyranny of the monarch by voting down proposed legislation. Though, of course, under our party majority system legislation, 'tyrannical' included, is very rarely voted down.
TBH, if it weren't for the acceptance of the fiction that the monarch rules the country and that all legislation emanates from them, the institution would be completely meaningless.