AKSHUALLY, YOU ARE CHEATING!
No seriously, the idea of #MultiLinkPPP isn't new and in #EDGEland aka. #Germany there a company to this day called #Viprinet who's CEO & Founder actually patented both mixed-technology link bonding and transparent applianced devices to facilitate these links, allowing for transparent redundancy, bonding, speed and low latency, without packet drops and on-the-fly speed changes.
- And unlike #MultipathTCP and #PPP - #MultiLink setups or #MPLS it's actually an encrypted #VPN and can transparently allow all #IPv4 & #IPv6 packets through it - including #UDP - whilst not requiring cooperation from the #ISPs and being able to arbitrarily connect anything from ISDN to Cable and from 2G to 5G as well as Ethernet and WiFi...
The main selling point is that it reduces costs compared to #SDSL with guaranteed SLAs, so a link failing would merely slow down the speeds transparently.
- So yeah it makes sense in nieche applications...