Present any evidence at all that they were spies. I'll wait.
>Edith Terry: Michael Kovrig is a friend, and I am very conscious of the privations he has endured. And while his background is complex and possibly included intelligence gathering for the Canadian government during his diplomatic career, he was very open about his research interests and contacts.
Kovrig, ex-diplomat working for a NATO funded NGO - textbook spy cover. Spavor's North Korean activities speak for themselves. The charges were Spavor providing Kovrig with photos of classified military equipment. I don't see why folks insist on being such useful idiots and pretend Canada doesn't have intelligence assets in PRC or PRC's formidable counter-intelligence mechanisms developed in last decade that has exposed every CIA asset somehow can't round up a few Canadian spies out of the thousands of Canadian expats in PRC. Canadian Spy Agency CSIS also didn't tweet "Welcome home, #Michaels" is just icing on cake.
This whole Meng situation has shown that rule of law is really flexible and that US lawfare reaches far and deep.
Textbook spy cover would be a mid-level manager for a Canadian auto parts company, on assignment to the Chinese office.
In real life, career diplomats wind up in NGO circles where their skills are more transferrable. NGOs are also easier to spinup where needed and raises less eyebrows when they communicate and develop relevant contacts working within the established track 2/2.5 people to people system. 1000s of NGOs operated in PRC without much scrutiny until the NGO crackdown following CIA purge explicitly to reduce espionage/influence, i.e. Kovrig's International Crisis Group wasn't licensed to operate at the time of his arrest. There's also Spavor publically spamming his NK credentials. The TLDR is that PRC retaliation is calibrated, these two were rounded up because they were the most obvious spies, and while Canada/West can fool public by insisting they're just innocent individuals, to others in the IR community the message is obvious.
They arrive in military aircraft, salute to military officers, is this normal for Canadian tourists?
https://twitter.com/DadingLi/status/1442344903032262665
welcomed by Canadian intelligence, does this happen a lot to Canadian tourists?
https://twitter.com/csiscanada/status/1441571942721593345
One Michael met Kim Jong-un, is this a common thing among Canadian tourists?
The article you linked to explains the link to NK.
It's quite normal for freed hostages to be flown back by their home country's military, yes.
As for the salute? It's not unusual for civilians to return salutes.
> welcomed by Canadian intelligence, does this happen a lot to Canadian tourists?
I don't think you can take a public tweet from CSIS as any evidence, either for or against, that they're spies.
> One Michael met Kim Jong-un, is this a common thing among Canadian tourists?
Michael Spavor runs (ran?) a North Korea-based consulting business. It's not entirely unsurprising that he's met Kim Jong-un. I would think, if anything, he would be spying on the North Koreans, not the Chinese. North Korea doesn't seem like a convenient home base for a Canadian intelligence operative who's spying on the Chinese.