"1dB loss does not make much difference."
I have a problem with this trope in that it can be true in some instances but may lead to carelessness. Firstly we are amateurs so I bear that in mind we all have our own ways of enjoying things with radio and it may be that some are more perfectionist than others. However, it could become a bit of a problem if this 1dB extends to another dB and another and another.
I do the opposite and save all those dB's. A dB on the coax choice, a dB gain on the antenna choice, a dB on the matching, a dB not lost through elevating the antenna, a dB lost running the radio at 70W instead of 100W. a dB lost not driving your audio right, a dB lost not worrying about a 2:1 SWR, etc etc. It can and does add up. I held contacts at S0 R3 with QSB so the stations disappeared altogether at times. I do this regularly in a low noise portable situation. It is when you hold these contacts that you were glad you kept you 4-5dB and not lost them !
It matters less in these times of increasing SFI's but I am glad I kept my signals intact where I could for those lower SFI's
and even strong signals eventually always become weak ones.
I think it is good to have an attitude to look after the dB losses. It is just a good approach.