@Tom R. Yikes, so that's a pretty terrible company match. Better than nothing, but not great.
The whole tax thing is NOT bs. But that depends on what kind of earner you are right now. If the person contributing is in a 15% tax bracket, then yes, I agree. 401K isn't very beneficial from a tax standpoint because one of the main advantages of a 401K is to shelter money when you're in a higher tax bracket and receive it when you're in a lower one. If the contributor is in the 15% bracket, they probably will be in the same or higher at retirement, where you lose that advantage. The author is in a 28%+ tax bracket, where it absolutely does make a difference.
My plan is to be able to withdraw from my 401K in retirement (and before with rule 72(t) without penalty), and only show a taxable income of under 75K, which would put me into the 15% tax bracket. While actually bringing in 2-3X more than that. At which point, I would see a tax savings of between 13% and 28% from my 401K based on current tax rates and whether I can show those to be capital gains (at which point I will be taxed at 0%).
No one here is saying REI is a bad investment. We're on a REI blog. What we're saying is diversifying with a 401K is a good thing to do. Especially if you've been through a downturn cycle. I personally haven't, but I know if it does happen again, I can handle long vacancies and a drop of 30% in price. Heck, I can even use my 401K to buy more property if I want because I can take a loan of up to 50K on it, being my own bank.
I'm not sure what you're saying about your 401K. Just because you can't pull out the cash immediately, doesn't mean it isn't there. If you contributed 33K (30 of yours and 3 of your company)to a 401K (this would obviously have to be over 2 years as max contributions per year are around 18K) and didn't touch it for 30 years, with 8% average market return which is historically accurate, you would have 332K.
The downside to that is you wouldn't be able to leverage that money out and purchase more properties, that is true (though most plans will let you take a 401K loan for anything you want...). That is a definite negative to 401K. Now, say you add an extra 5K a year throughout the 30 year period. At the end of 30 years, you'd have 898K. Again, not as great as you could possibly get with real estate, but that's a pretty decent safety net for only putting in 5K a year. That would leave you with about 20-25K + Real Estate Investment income a year to buy more property if that is what you choose to do. So, why wouldn't you do both?
Is 5K a year or $192 a paycheck (bi-weekly) a lot to ask for as a safety net? According to your numbers, it won't cut in too much to your savings habit... Only you can answer that question though. Some people that is a LOT of money. Some people, it's peanuts.
It's of use to note that the 5K income deduction would only affect your paycheck by about 3.5-4K a year due to tax savings. So really, it would be 3-4K less per year in take home pay that you wou;dn't be able to invest in real estate.