Saying that you are 6ft when you know that you are actually 5ft 11, 4ft 11, or anything else less than 6ft, to circumvent someone's boundaries expressed as a filter, is absolutely acting like you are entitled to a date. It's acting like your ability to get a date trumps someone else's boundaries concerning what height they like.
The fact they have algorithms and data which excludes men (and women) by centimetres is the real issue.
Vote with your feet. The only argument against voting with your feet goes something like "if I leave this dating site, I won't be able to get my dick wet so easily", which would be that "acting like you have a right to a date" attitude I was talking about.
And if the searches show women opt for '6ft and over' maybe women need to give their heads a wobble too.
As I have already said, if someone is filtering you out based on something as shallow as height, you didn't want to date them anyway. That doesn't mean that you get to trample their boundaries on that, far from it.
Don't you think your choice of words is rather extreme for 3cm added to height? God, I'd like to see how much of a twist you get yourself in over something really important.
If you are willing to lie to me about 3cm, what else are you willing to lie to me about? Still being married? Attitude towards having kids? The date and result of your last STI test? C'mon, learn to recognise a red flag when you see it. The Freedom Programme is really good for this.
I think that you fundamentally fail to recognise that someone who will lie to you about little things will lie about big things too. This has been well-understood for a long time, being documented in the New Testament (Luke 16:10-13) and still written about in modern times.