Q: Please comment on my perspective below. Am I wrong?
A bond matures and you get a known amount of principal back (on top of the distributions paid out along the way). As such it provides a safety component in your portfolio. The safety comes from NOT being at the mercy of the market (all you have to do is wait till it matures).
A bond ETF does not do this. The principal you put into it is eternally at the mercy of the current market price of that ETF. Even when any bond matures, the ETF just goes out and buys more bonds at current market prices. Therefore it does not return a known amount of principal as a bond would. The whole concept of "maturity" or "yield to maturity" disappears. So these ETFs are a lot more like equities than bonds. If people are following advice about the percentage to allocate between bonds and equities, in my opinion it is a mistake to treat the bond ETFs as in the bond category.
(The exception to the above being "target date bond etfs which do mature and return your principal").
A bond matures and you get a known amount of principal back (on top of the distributions paid out along the way). As such it provides a safety component in your portfolio. The safety comes from NOT being at the mercy of the market (all you have to do is wait till it matures).
A bond ETF does not do this. The principal you put into it is eternally at the mercy of the current market price of that ETF. Even when any bond matures, the ETF just goes out and buys more bonds at current market prices. Therefore it does not return a known amount of principal as a bond would. The whole concept of "maturity" or "yield to maturity" disappears. So these ETFs are a lot more like equities than bonds. If people are following advice about the percentage to allocate between bonds and equities, in my opinion it is a mistake to treat the bond ETFs as in the bond category.
(The exception to the above being "target date bond etfs which do mature and return your principal").