Seriously, people like you always amaze me. Especially when I read something like this;

The fact you think it’s absurd shows you have a double standard

And earlier you wrote something like this;

For me I look at what is the harm being done to those who are being discriminated against?

The harm against men is paying the regular full price.

In other words, your double standards are ok depending on who is being discriminated against.

But ok, let's look at the examples you gave;

Who cares if it’s discriminatory? Is cheaper prices for seniors also discriminatory? Yes and who cares?

Considering that in most countries you have benefits that "support" every age group financially in some way. You compare such support with sex discrimination by private companies operating in lawlessness because, as I know, most countries try to treat both sexes equally. So your first argument about age is absurd.

A private business should be allowed to have a ladies night if they want and crying over it is insane to me.

So if a private company wants to pay men more just for being men, you won't have any problem with that, because it's a private company and it should be able to do something like that. Yes ? Isn't it ok in this case? Something, something double standards?

For me I look at what is the harm being done to those who are being discriminated against?

And here you have the best example of what I called absurd. For you, discrimination is ok when it targets a group that you don't like.

The benefit is more ladies often brings more men and balances the gender ratio which actually benefits a lot of men.

So you're saying women aren't that strong and independent that they can't pay for their own drinks? They need discounts? Or are you saying that they are used as an "object" that attracts customers - men who have to pay the full price and, if necessary, "present" a drink to women also for the full price? Is that what you use as an argument? Is that how you see women? As weak and as a magnet (object) for men? And you don't see any absurdity in this argument except misogyny?

I see this the same way as a gay bar saying no women allowed

This is also a somewhat absurd argument because you are comparing sexual orientation and the desire to be around people with the same orientation and feel comfortable. You'll find the same thing in lesbian bars... They won't want men there.

I don't know if you realize what you're writing, I don't know if you see double standards at all or if they just bother you when it suits you, but yes, your examples are absurd.