The first article of our constitution says people shall be treated equally in equal situations. I presume that most countries have similar clauses but, beyond legalese, it's also simply in line with my ethics to treat everyone equally
There are people behind those connection requests. I don't try to guess on my server who is a bot and who is not; I'll make mistakes and probably bias against people who use uncommon setups (those needing accessibility aids or using e.g. experimental software that improves some aspect like privacy or functionality)
Sure, I have rights as a website owner. I can take the whole thing offline; I can block every 5th request; I can allow each /16 block to make 1000 requests per day; I can accept requests only from clients that have a Firefox user agent string. So long as it's equally applied to everyone and it's not based on a prohibited category such as gender or religious conviction, I am free to decide on such cuts and I'd encourage everyone to apply a policy that they believe is fair
Cloudflare and its competitors, as far as I can tell, block arbitrary subgroups of people based on secret criteria. It does not appear to be applied fairly, such as allowing everyone to make the same number of requests per unit time. I'm probably bothered even more because I happen to be among the blocked subgroup regularly (but far from all the time, just little enough to feel the pain)
If by "our constitution" you mean the U.S. Constitution then no, it says nothing of the sort. The first article of the U.S. Constitution concerns the organization of the legislative branch. You may be referencing the Equal Protection and Due Process clauses, in the Fifth and Fourteenth amendments, but neither of those applies in this situation either since there are no laws or governmental actions at issue here, and random sites on the internet are not universally considered to be public accommodations. Even in the ADA context, the law isn't actually clear, since websites aren't specified anywhere in the text at the federal level and there's no SCOTUS precedent on point.
Some states are more stringent with their own disability regulations or state constitutions, but no state anywhere in the U.S. has a law that says every visitor to a website has to be treated equally.
You can assume it's the USA and that I'm just dead wrong, but the third word of my profile specifies where I'm from and you'd find that this Dutch constitution matches the comment's contents
Equal protection is indeed not the same as equal treatment. No, it really does say that everyone shall be treated equally so long as the circumstances are equal (gelijke behandeling in gelijke gevallen)
I didn't assume, that's why I started my comment with "if by what you mean." Good to know that you were referencing a different place, but it's unrealistic to expect people to delve into your account bio to understand what you intended by "our constitution," especially when the parent comment also contained no geographic or cultural references. Perhaps you know the parent commenter and know that they share your geography? If so, that would also have been helpful context.
As an aside, I'm curious by how that language in the Dutch constitution actually works in practice. Is it just a game of distinguishing between situations or people to excuse disparate conduct? It seems like it would be unworkable if interpreted literally.
You have chosen to be blocked. Nothing forbids you from using different tech. This is not discrimination. Discrimination is when you are discriminated based on things you can't change (like race) or can't change easily (wealth). And if using VPN, you are lying about your origin, not to mention that constitution does not apply to foreigners who are not even in the country, just behind VPN. VPNs are grey area, nor allowed nor disallowed.
Do not apply laws where they do not apply.