Let's be honest 95% of the reason is taxes. If they are saving 10 billion / year in taxes, they can easily pay to relocate people and for any resources they need.
There's a bigger downside to giving a corporation a pass on taxes, in that the people of that state themselves foot the bill for that company. Not just in the upfront subsidies but also the infrastructure cost. Roads, schools, police, if a company isn't paying into those everyone else has to pay more to cover the free loader. All for this company to attract more wealthy residents who will likely drive up housing prices and drive local residents out. All the while both the company and new residents push for even further tax benefits specifically for themselves and further place the burden of taxes on your average joe.
IMO what's been explained in the article seems logical given what's happening / going to happen.
You are conflating something being inaccurate with you disagreeing with how's it's measured. Yes, given the current methodology Ireland is over-represented but I don't see how that suddenly makes the rest of the data irrelevant.
The chart was provided by Our Workd in Data, which is partnered with the worlds biggest Universities:
https://ourworldindata.org/about
This information is used on most websites including wikipedia. I would say there is significant credibility behind it.
Your argument was that Taiwan was more efficient, not that they can stretch their income further. Mind you the chart I linked has nothing to do with income or the purchasing power of said income, it's merely the amount of GDP produced per working hour. It's not the actual amount people take home in the US. The vast majority of the fruits of labor in the US goes increasingly to the 1%, hence why the median wage is a mere 17.02 or barley enough to support just yourself (in most states) with a 40 hour work week.
Just for reference Taiwan has a cost of living index of 54.2 while the US is at 72.4 so it would be inaccurate to say that purchasing power drops to 1/4 or less when it doesn't reach even 1/2 or less. Living in Taiwan on average costs 74% as much as living in the US.