The main advantage is the freedom you have while planning and constructing routes. Any number of ports can be attached.
No need to use the sealing material. Once connected, parts are airtight. Moreover, assembling is a very easy process.
Create complex systems in a minute. You don’t have to follow predefined templates. Connect and create more complex systems without limitations. Add a row and a blank flange to a bayonet and create a new route instead, dismantle and start again.