Even the HK based crew dislike their YVR counterparts:

For those that don't read Chinese basically a HKG based crew complaining about the attitude of YVR crew:

記得一次令我不得不O嘴既係喺一次after flight時發生的。HK base啲菇慣性同同事講thank you for the flight, 係基本禮貌！那一次，有幾個HK男菇幫其他菇喺行李輸送帶度取行李 ，我都順帶喺取回自己行李時大聲向各位講聲唔該晒同thank you for the flight之後拜拜 ! 一個 YVR base 既女purser 走黎同我講： 乜你地啲HK base 甘鐘意乜都say thank you 架啫？！
我有少少咢然地答： 禮貌黎㗎啫！(心諗畢竟人地真係幫咗你，而且班機都飛得幾開心吖！)
佢竟然仲問：咁我地無講即係話我地無禮貌啦！？！？
我好想答 係 ！你地連幾基本禮貌都無，點解公司會請埋你d咁既人��不過最後我都係笑笑口講聲拜拜走了！ 啤！！

so is this their way of expressing fear in loosing jobs to more offshore bases? or is this their scare mongering tactics trying to hold HK public on their side? I don't read cantonese but i like to see specific factual/unbiased facts rather than simply "i don't like them" or "I don't like their attitude"

Who are the crew members expressing their gratitude to? The pilots? Other crew members? I don't see why you have to give numerous thanks to other crew member for doing their job. I think the purser tried to tell the other FA that she/he was over doing it. Come on, are your colleagues going to thank you a dozen times for handing them a file? That's kind of ridiculous isn't it.

I think the YVR based purser did the right thing to correct the overly thankful FA. BTW, most of the YVR based pursers I've come across are super professional and one of the lady pursers must I say is extreme attractive too.

Sometimes I kind of think that people have forgotten what 禮貌 truly is and create a definition that suits their purpose because 9 out of 10 times they don't walk the talk.

I think it is basically a difference in culture and just a clash.
Anyway expect more to come with more outport crew stations opening

Different work ethics and attitude!

Coles note on the passage in Chinese?

How is this related to work ethic? Are you presumed to be a harder worker by repeating the words "thank you"?

I think it is more how you treat your colleagues. However it is difficult to assess because of the different culture.

Different people and culture operate differently. It's more or less the same everywhere, even outside of the aviation industry.