I very much would leave the website if I'm opening the site for the first time and it doesn't even render partially, but I recognise people like me are the minority of potential visitors.
Unless you have a tiny target audience that includes people who tend to disable Javascript, this seems like a fine solution. I use JS to hide email from the most basic of scrapers most of my sites and so far it has worked wonders.
However, long term this seems like a solution that will be difficult to maintain. Either the proxy will start stripping CSS as well (s/hidden/visible) or it'll require constantly playing along in a cat-and-mouse game that you don't stand to gain anything in by winning.
I would add random, page-like endpoints that only you know and request them through their proxy (through VPNs/TOR/you name it). Ban the entire /48 (IPv6) or /24 (IPv4) or send them into a tar pit (iptables -A INPUT -p tcp -m tcp -dport 80 -j TARPIT for the IP address you target) to exhaust their resources.
Unless you have a tiny target audience that includes people who tend to disable Javascript, this seems like a fine solution. I use JS to hide email from the most basic of scrapers most of my sites and so far it has worked wonders.
However, long term this seems like a solution that will be difficult to maintain. Either the proxy will start stripping CSS as well (s/hidden/visible) or it'll require constantly playing along in a cat-and-mouse game that you don't stand to gain anything in by winning.
I would add random, page-like endpoints that only you know and request them through their proxy (through VPNs/TOR/you name it). Ban the entire /48 (IPv6) or /24 (IPv4) or send them into a tar pit (iptables -A INPUT -p tcp -m tcp -dport 80 -j TARPIT for the IP address you target) to exhaust their resources.