David,
You've not been patronised by anyone. People with a lot more experience than yourself have taken their time to offer you advice - not to belittle or patronise you but merely offering advice which you can take or leave as you see fit.
As for not having knowledge of the future of carpet cleaning, we operate one of the most powerful and sophisticated carpet cleaning systems on the planet that are at the very cutting edge of carpet cleaning technology. Whether you like it or not LM dates back to when our grannies used to shampoo their carpets with a Bex Bissell and 1001, indeed that technique gave birth to one of the most frequently asked question by customers, 'If I have my carpet cleaned will it look dirty again in a week.' That's what shampooing did, just clean the tops of the fibres and not deep down which is the reason most carpet cleaners frown upon it as an outright cleaning system on anything other than low profile carpet.
VLM is a system that has been around for donkey's years and never really caught on by either the public or the carpet cleaning industry for anything other an titillating carpets in between deep cleans with HWE. The real downfall of VLM is the residues it leaves in the carpet and if carpets are repeatedly cleaned with that method you can end up with serious problems which is why carpets cleaned with that method should extraction cleaned periodically to remove those build ups.
If I were one of the oldies stuck in the past I'd be the one going down the LM & VLM route and you would be operating the leading edge technology.
David, this is just a difference in opinions that you have encountered, there's nothing personal about it but to insult people and make it personal is out of order.
Simon