> I've always found it quite easy to move up and down the stack
This is the most important point that most people overlook: the Web doesn't have a single stack, even though we talk about "full stack developers" and similar. Web is your ultimate distributed system (which is why you have no other option but to make it static); you never develop a single application, but a multitude of applications often (usually, in fact) executing on systems you have next to no control over.
Just think of your quintessential "Web page": a server prepares an HTML page which is then rendered in a browser. First, you have a server, which you rarely control (unless it physically sits on your desk/rack, and even then you're at mercy of your ISP). Second, even assuming the page was served correctly, it then arrives to another system which has OS/browser/display/etc which you have absolutely no control over except for hoping that it adheres to all the standards you have adhered to when developing. Even if there is no client-side code (i.e. Javascript) to be executed, even the simplest HTML (as well as CSS) are instructions that need to be interpreted.
What you call "hacks" are essentially numerous solutions -- some good and others less so -- to inherent problems of distributed computing, working around the peculiarities of the underlying platforms (namely HTTP and TCP/IP) to ensure reliability. Many things that are taken for granted in platform-specific development simply don't exist here; as a reminder, take a look at https://en.wikipedia.org/wiki/Fallacies_of_distributed_compu...
This is the most important point that most people overlook: the Web doesn't have a single stack, even though we talk about "full stack developers" and similar. Web is your ultimate distributed system (which is why you have no other option but to make it static); you never develop a single application, but a multitude of applications often (usually, in fact) executing on systems you have next to no control over.
Just think of your quintessential "Web page": a server prepares an HTML page which is then rendered in a browser. First, you have a server, which you rarely control (unless it physically sits on your desk/rack, and even then you're at mercy of your ISP). Second, even assuming the page was served correctly, it then arrives to another system which has OS/browser/display/etc which you have absolutely no control over except for hoping that it adheres to all the standards you have adhered to when developing. Even if there is no client-side code (i.e. Javascript) to be executed, even the simplest HTML (as well as CSS) are instructions that need to be interpreted.
What you call "hacks" are essentially numerous solutions -- some good and others less so -- to inherent problems of distributed computing, working around the peculiarities of the underlying platforms (namely HTTP and TCP/IP) to ensure reliability. Many things that are taken for granted in platform-specific development simply don't exist here; as a reminder, take a look at https://en.wikipedia.org/wiki/Fallacies_of_distributed_compu...