Sir, I beg to disagree!
In the first instance, the use of the term 'earlier' is superfluous as, chronologically, it HAS to be before your post; no way could it have been, for example, later!
Whilst a passenger is, clearly, an item being transported, with or without pre-payment, from A to B (possibly via C, D E & F) by some mechanical (teleporting?) means other than walking, the term 'Customer' is multi-faceted.
Whether or not financial remuneration is involved is irrelevant. A customer is simply the recipient of anything offered and received from a 'donor'.
Example: if I were to find myself working in a warehouse and one of the fitters came to me and requested a floggletoggle which I was able to supply to them, they would thus be my customer.
Example: If I worked in the IT department (oxymoron alert?) and a colleague asked me to install some software, said colleague would then be my customer.
Agreed but if the Railway Station, as it should be, is thus referred, does the Bus Station then become a Road Station and where does that leave a Gas Petrol Station? Whilst I also abhor the term you quote, I see that there may be some logic behind the abuse, init, like?
The logic of linen handkerchiefs faded from my memory some 40 years ago when I realised several things:
Why do I want to preserve that which is dispelled from my nose?
Will my washing machine be thorough enough to not wash the residue into the other garments in the same cycle?
Brands like Kleenex (others are available) offer perfectly serviceable tissues designed for use once and dispose of.
Toilet roll has a similar texture and composition to the branded paper tissues and is flushable (and less labour intensive in washing and, all too often, ironing!)
If out-and-about, I will indulge in the purchase of packs of pocket tissues; at Migros, for example, a brick of 42 packs of 10 tissues for under CHF4.00 is not, IMHO, to be sneezed at!