In short: because YSF and Wires-X are 2 different things, Wires-X is proprietary and cannot be accessed by a hotspot and Yaesu cracked down on YSF <-> Wires-X bridges.

Jacob K0RQ has created a very good and detailed page about WIRES-X vs. YSF vs. FCS. It is a worthwhile read.

Jacob K0RQ has created a very good and detailed page about WIRES-X vs. YSF vs. FCS. It is a worthwhile read.

Only when using CW.

All voice communication whether it is DMR, YSF, Wires(X), Repeaters, HF should be in plain speach not using Q-Codes.
Q-Codes were meant for CW and just muddles the waters and confuses people.
You do not need to say "hi hi" and then laugh afterwards.
If you are assisting with emergency services it is now requested to use plain language. Plain language is the standard for communications not Q-Codes.
My Location is XXXXXX not my QTH.

Only on a CB Radio never on Ham/Ameteur Radio.
Your parents gave you a name not a handle.

According to Jim W6LG who has done an awesome video about this, if using quality connectors the DB loss is minimal.