Specific Neurons that Require Glucose
The source you link does not report that certain neurons only use glucose, and I am unaware of any reputable source that makes this claim.

Neurons do tend to use glucose as an energy source when it is available, and the brain does not tolerate sudden drops in glucose. However, as your source notes, other energy sources can be utilized given enough time to adjust, such as during starvation/fasting as well as suckling.



Cahill, G. F., Herrera, M. G., Morgan, A., Soeldner, J. S., Steinke, J., Levy, P. L., ... &amp; Kipnis, D. M. (1966). Hormone-fuel interrelationships during fasting. The Journal of clinical investigation, 45(11), 1751-1769.

Hawkins, R. A., Williamson, D. H., &amp; Krebs, H. A. (1971). Ketone-body utilization by adult and suckling rat brain in vivo. Biochemical Journal, 122(1), 13-18.

Nehlig, A., &amp; de Vasconcelos, A. P. (1993). Glucose and ketone body utilization by the brain of neonatal rats. Progress in neurobiology, 40(2), 163-220.

Owen, O. E., Morgan, A. P., Kemp, H. G., Sullivan, J. M., Herrera, M. G., &amp; Cahill, G. J. (1967). Brain metabolism during fasting. The Journal of clinical investigation, 46(10), 1589-1595.

Pollay, M., &amp; Alan Stevens, F. (1980). Starvation‐induced changes in transport of ketone bodies across the blood‐brain barrier. Journal of neuroscience research, 5(2), 163-172.